{
  "generation": 1000,
  "organisms": [
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:27.159600",
      "fitness": 0.7971062834518274,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:27.159867",
      "fitness": 0.5373149531274237,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:27.160082",
      "fitness": 0.5239123062155211,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:27.160314",
      "fitness": 0.5253890554874339,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:27.160575",
      "fitness": 0.7650945842621841,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:02:41.029296",
      "fitness": 0.5487733084772913,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.029561",
      "fitness": 0.7134774807637957,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.029829",
      "fitness": 0.7759429534113093,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:02:41.030049",
      "fitness": 0.7654561950579608,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:02:41.030273",
      "fitness": 0.5342507344831012,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:02:41.030516",
      "fitness": 0.5976426294375542,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:02:41.037419",
      "fitness": 0.8183206172369657,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.037745",
      "fitness": 0.6719932183892525,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:41.037970",
      "fitness": 0.7377144936376199,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:02:41.038208",
      "fitness": 0.6539731251583546,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:02:41.038432",
      "fitness": 0.6368222030082555,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.038649",
      "fitness": 0.8189262624938227,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:41.038857",
      "fitness": 0.5020294925142095,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:02:41.039087",
      "fitness": 0.6555264716407749,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:02:41.039287",
      "fitness": 0.8263930086940148,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:41.039494",
      "fitness": 0.7682187238448444,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:02:41.039710",
      "fitness": 0.779973453526192,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:41.039925",
      "fitness": 0.8028016545222423,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.040146",
      "fitness": 0.528815181544763,
      "description": "transformer: text.upper()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:41.040350",
      "fitness": 0.5492687746514168,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.040576",
      "fitness": 0.6052217001760672,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:02:41.040788",
      "fitness": 0.6637040617335138,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:02:41.041000",
      "fitness": 0.5836492621055188,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:02:41.041209",
      "fitness": 0.5383094622446297,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:02:41.041418",
      "fitness": 0.7515236594529935,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:02:41.041628",
      "fitness": 0.7144452604059186,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:04:10.449444",
      "fitness": 0.8635012150444993,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.449737",
      "fitness": 0.8627558565868549,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:04:10.449982",
      "fitness": 0.5044126116594309,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:04:10.457373",
      "fitness": 0.6428918618787345,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.457782",
      "fitness": 0.6315138917109181,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:04:10.458158",
      "fitness": 0.8640893827656864,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.458522",
      "fitness": 0.8291247161118958,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.458881",
      "fitness": 0.816045719735552,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.459283",
      "fitness": 0.5474185863957798,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.459647",
      "fitness": 0.8809129453767197,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.460099",
      "fitness": 0.8841046702012659,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:04:10.460538",
      "fitness": 0.599323940935761,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.460932",
      "fitness": 0.8828921168526682,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.461314",
      "fitness": 0.7214455043582224,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.461654",
      "fitness": 0.8422759429376966,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.461949",
      "fitness": 0.75547778836828,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.462228",
      "fitness": 0.8688232305952174,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.462508",
      "fitness": 0.740532199106852,
      "description": "calculator: a * b"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.462784",
      "fitness": 0.8733040573899252,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.463090",
      "fitness": 0.5620941094229821,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.463376",
      "fitness": 0.6001203332468085,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.463662",
      "fitness": 0.6524057022001052,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.463973",
      "fitness": 0.5656586971567175,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.464269",
      "fitness": 0.569301140519643,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.464519",
      "fitness": 0.6396091459042025,
      "description": "calculator: a * b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.464744",
      "fitness": 0.8142802113253407,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.464948",
      "fitness": 0.6513760863098951,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.465168",
      "fitness": 0.7215777900880771,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.465371",
      "fitness": 0.5918292357029993,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.465607",
      "fitness": 0.8763261474488044,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.465844",
      "fitness": 0.8369656899515245,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.466052",
      "fitness": 0.6336303832315321,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.466270",
      "fitness": 0.5111874442372472,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:04:10.466481",
      "fitness": 0.5585682158035039,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.466701",
      "fitness": 0.7195230751572466,
      "description": "calculator: a * b"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:04:10.466932",
      "fitness": 0.7609516266822903,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.467214",
      "fitness": 0.8711048922587958,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.467433",
      "fitness": 0.6239453798519365,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.467634",
      "fitness": 0.6010700868325811,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.467873",
      "fitness": 0.7565644561496634,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.468087",
      "fitness": 0.646923373248842,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.468335",
      "fitness": 0.6272225106671998,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.468539",
      "fitness": 0.6719776035772527,
      "description": "calculator: a + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.468753",
      "fitness": 0.7139014773804542,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.468982",
      "fitness": 0.8467114908352311,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.469202",
      "fitness": 0.6757043360081326,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:04:10.469414",
      "fitness": 0.6873882495442147,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.469625",
      "fitness": 0.5523711107607607,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.469882",
      "fitness": 0.6719807016812801,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.470089",
      "fitness": 0.8720568870793839,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.470319",
      "fitness": 0.7226549252688654,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:04:10.470555",
      "fitness": 0.5729424029611296,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.470771",
      "fitness": 0.8749360235945006,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.471000",
      "fitness": 0.6291793674771833,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.471214",
      "fitness": 0.7700610768408379,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.471431",
      "fitness": 0.7518896675135355,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.471656",
      "fitness": 0.5768744530265598,
      "description": "transformer: text.lower()"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:04:10.471870",
      "fitness": 0.541851127327849,
      "description": "sequence_generator: i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:04:10.472105",
      "fitness": 0.6629227221131142,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:04:10.472343",
      "fitness": 0.676331585467836,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:04:10.472569",
      "fitness": 0.564937318707245,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:04:10.472826",
      "fitness": 0.6060883928493952,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:08:42.819459",
      "fitness": 0.5734034247512096,
      "description": "calculator: a - b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:08:42.819755",
      "fitness": 0.6045838749870631,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:08:42.820031",
      "fitness": 0.5079673027386791,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:08:42.820263",
      "fitness": 0.8803922491575127,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:08:42.820506",
      "fitness": 0.6318617599508437,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:08:42.820720",
      "fitness": 0.8947370002698782,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:08:42.827697",
      "fitness": 0.874741753816896,
      "description": "calculator: a + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:08:42.828226",
      "fitness": 0.5532332547023375,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:08:42.828795",
      "fitness": 0.820310669720457,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:08:42.829167",
      "fitness": 0.6803703102214613,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:08:42.829524",
      "fitness": 0.5432732261007277,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:08:42.829879",
      "fitness": 0.7683726406021711,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:08:42.830236",
      "fitness": 0.6346398676620781,
      "description": "calculator: a + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:08:42.830662",
      "fitness": 0.6239723753262114,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:08:42.831031",
      "fitness": 0.6913301309724426,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:08:42.831393",
      "fitness": 0.6718866153427819,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:08:42.831859",
      "fitness": 0.5125709898010848,
      "description": "calculator: a * b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:08:42.832349",
      "fitness": 0.6639309264892771,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:08:42.832741",
      "fitness": 0.5316363505523973,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:08:42.833115",
      "fitness": 0.889174045823186,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:08:42.833494",
      "fitness": 0.598856743271996,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:08:42.833843",
      "fitness": 0.5835569463181494,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:08:42.834144",
      "fitness": 0.6794882249254454,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:08:42.834433",
      "fitness": 0.8488274185650883,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:08:42.834757",
      "fitness": 0.6774706398594215,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:08:42.835052",
      "fitness": 0.8909074105451569,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:08:42.835275",
      "fitness": 0.7735467428067586,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:08:42.835499",
      "fitness": 0.7558340654331407,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:08:42.835717",
      "fitness": 0.519176148475425,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:08:42.835931",
      "fitness": 0.8995153195441936,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:11:03.086083",
      "fitness": 0.5399207598429848,
      "description": "transformer: text.lower()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:11:03.093771",
      "fitness": 0.7392028541590646,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:11:03.094143",
      "fitness": 0.8486840951157382,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:11:03.094904",
      "fitness": 0.8283283846653797,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:11:03.095164",
      "fitness": 0.8170368062238358,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:11:03.095401",
      "fitness": 0.7188550452889984,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:11:03.095646",
      "fitness": 0.8872617671389338,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.095872",
      "fitness": 0.8046494889854593,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.096107",
      "fitness": 0.5549018186629737,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:11:03.096324",
      "fitness": 0.8377684591687166,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:11:03.096569",
      "fitness": 0.8405152943966012,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:11:03.096799",
      "fitness": 0.5363418431533293,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:11:03.097053",
      "fitness": 0.5276197285252291,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:11:03.097277",
      "fitness": 0.894536130079419,
      "description": "calculator: a * b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:11:03.097549",
      "fitness": 0.7557023187046128,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:11:03.097843",
      "fitness": 0.7159591537726163,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:11:03.098159",
      "fitness": 0.552804108148819,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:11:03.098397",
      "fitness": 0.5033955831106264,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.098662",
      "fitness": 0.7709053609986593,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:11:03.098890",
      "fitness": 0.8656844336098886,
      "description": "sequence_generator: i"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:11:03.099188",
      "fitness": 0.7022125359460253,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:11:03.099498",
      "fitness": 0.8186314459323256,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:11:03.099742",
      "fitness": 0.5295483441211705,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:11:03.099972",
      "fitness": 0.8402762881638028,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:11:03.100201",
      "fitness": 0.7242495748493554,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:11:03.100446",
      "fitness": 0.821092191199839,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:11:03.100683",
      "fitness": 0.6517064764610453,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.100921",
      "fitness": 0.7053279631094123,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.101147",
      "fitness": 0.825238069610916,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:11:03.101375",
      "fitness": 0.5212171519233822,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "e622ac3b",
      "created_at": "2026-01-05T19:11:03.101623",
      "fitness": 0.7106344573379721,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:11:03.101886",
      "fitness": 0.6097001521680876,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:11:03.102104",
      "fitness": 0.5465431384240301,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:11:03.102334",
      "fitness": 0.8021838595671336,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.102579",
      "fitness": 0.7338599708181281,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:11:03.102803",
      "fitness": 0.6278292800725449,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.601404",
      "fitness": 0.5474894548936099,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.601723",
      "fitness": 0.8404711270388149,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.609175",
      "fitness": 0.6252888372105083,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.609437",
      "fitness": 0.5523471207737103,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.609715",
      "fitness": 0.5989681328491298,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "e622ac3b",
      "created_at": "2026-01-05T19:13:00.609947",
      "fitness": 0.5169119996556653,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.610207",
      "fitness": 0.8448332073604552,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.610448",
      "fitness": 0.8561028997655552,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.610686",
      "fitness": 0.7992144140894735,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:13:00.610910",
      "fitness": 0.7042337538642656,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.611142",
      "fitness": 0.6497361867230687,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:13:00.611373",
      "fitness": 0.8233128141185607,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.611631",
      "fitness": 0.529036890261724,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.611858",
      "fitness": 0.514828828038701,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.612109",
      "fitness": 0.6025361655705741,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.612335",
      "fitness": 0.638244082030605,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:13:00.612566",
      "fitness": 0.5959593565037108,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.612786",
      "fitness": 0.8596337398145489,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:13:00.613003",
      "fitness": 0.660207811511312,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.613210",
      "fitness": 0.5730764413701308,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:13:00.613441",
      "fitness": 0.8155714198715609,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:13:00.613674",
      "fitness": 0.8277988741268554,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.613920",
      "fitness": 0.5122581122120562,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.614139",
      "fitness": 0.6913302243292301,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:13:00.614368",
      "fitness": 0.7829008496118403,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.614603",
      "fitness": 0.6614850860113267,
      "description": "transformer: text.lower()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:13:00.614823",
      "fitness": 0.5806871397155386,
      "description": "calculator: a - b"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.615046",
      "fitness": 0.6605907546733321,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.615301",
      "fitness": 0.6285699838426084,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:13:00.615531",
      "fitness": 0.6571692401515321,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.615753",
      "fitness": 0.8640570357801776,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:13:00.615970",
      "fitness": 0.5154800074005833,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:13:00.616199",
      "fitness": 0.8444924096446385,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:13:00.616433",
      "fitness": 0.8363760515761116,
      "description": "transformer: text.upper()"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:13:00.616651",
      "fitness": 0.7985948023328898,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:13:00.616920",
      "fitness": 0.6876723782708558,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.617157",
      "fitness": 0.726671288807861,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:13:00.617405",
      "fitness": 0.7530978850987611,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.617629",
      "fitness": 0.856086866501331,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:13:00.617838",
      "fitness": 0.5631211531316953,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.618059",
      "fitness": 0.8817425094716442,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:13:00.618280",
      "fitness": 0.637549104766158,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:13:00.618559",
      "fitness": 0.6063759923429939,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:13:00.618784",
      "fitness": 0.8469281626505045,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:13:00.619009",
      "fitness": 0.8407262286779004,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:13:00.619253",
      "fitness": 0.7549235927331504,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:13:00.619478",
      "fitness": 0.6871697368539903,
      "description": "calculator: a - b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:13:00.619708",
      "fitness": 0.6027102732249803,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:16:19.804500",
      "fitness": 0.8950809358946215,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.804824",
      "fitness": 0.5248183872519775,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:16:19.805087",
      "fitness": 0.7158675268356829,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.805353",
      "fitness": 0.6717704418160781,
      "description": "transformer: text.lower()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:16:19.806001",
      "fitness": 0.823854001926775,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.806260",
      "fitness": 0.63038902893041,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.806515",
      "fitness": 0.5374288059864436,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:16:19.806749",
      "fitness": 0.6866475478539549,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.806993",
      "fitness": 0.6563623329211951,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.807231",
      "fitness": 0.524313660328368,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:16:19.807469",
      "fitness": 0.6061202336391756,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.807715",
      "fitness": 0.8416202670645165,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.807954",
      "fitness": 0.7177533696030464,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.808338",
      "fitness": 0.5800298012731051,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:16:19.808572",
      "fitness": 0.8907599851854002,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.808798",
      "fitness": 0.5545468849211306,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:16:19.809042",
      "fitness": 0.8489771657674638,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:16:19.809275",
      "fitness": 0.6384500681467442,
      "description": "sequence_generator: i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.809546",
      "fitness": 0.5931727174769904,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:16:19.809784",
      "fitness": 0.8214168476863495,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:16:19.810020",
      "fitness": 0.8990800968246708,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:16:19.810269",
      "fitness": 0.8733953074611367,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:16:19.810523",
      "fitness": 0.7369919225564086,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.810749",
      "fitness": 0.8931438941934837,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.811109",
      "fitness": 0.5186559060137884,
      "description": "transformer: text.lower()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:16:19.811382",
      "fitness": 0.655967981477393,
      "description": "calculator: a - b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.811631",
      "fitness": 0.7401525566673208,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.811868",
      "fitness": 0.7196837228567714,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:16:19.812122",
      "fitness": 0.6281953951373186,
      "description": "calculator: a * b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:16:19.812367",
      "fitness": 0.8148663006811654,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:16:19.812596",
      "fitness": 0.7252965795843092,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:16:19.812861",
      "fitness": 0.5264450296612381,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.813098",
      "fitness": 0.7077320930430606,
      "description": "calculator: a + b"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:16:19.813336",
      "fitness": 0.6072889554251852,
      "description": "calculator: a * b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.813568",
      "fitness": 0.6211769209678113,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:16:19.813831",
      "fitness": 0.8579302646553477,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.814052",
      "fitness": 0.5703220859911222,
      "description": "sequence_generator: i"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:16:19.814317",
      "fitness": 0.6748028014108824,
      "description": "sequence_generator: i"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:16:19.814574",
      "fitness": 0.7076681421345306,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.814810",
      "fitness": 0.7550967695398911,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.815061",
      "fitness": 0.535956052165549,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.815295",
      "fitness": 0.6844486209079993,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:16:19.815558",
      "fitness": 0.8307159674700602,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.815789",
      "fitness": 0.7666441757647713,
      "description": "transformer: text.lower()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:16:19.816015",
      "fitness": 0.6351503866803677,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.816236",
      "fitness": 0.6142214147317862,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.816467",
      "fitness": 0.5391807378049059,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.816691",
      "fitness": 0.6154352751371643,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.816911",
      "fitness": 0.5611821940630549,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:16:19.817150",
      "fitness": 0.6117599475630713,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:16:19.817376",
      "fitness": 0.766283351513636,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:16:19.817596",
      "fitness": 0.7914797587029081,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:16:19.817841",
      "fitness": 0.6992343312206217,
      "description": "transformer: text.lower()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.818048",
      "fitness": 0.8485665095109083,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:16:19.818289",
      "fitness": 0.8575503888905482,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.818513",
      "fitness": 0.8309446992993434,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:16:19.818739",
      "fitness": 0.6667844643575302,
      "description": "sequence_generator: i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.818988",
      "fitness": 0.7783147881388659,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:16:19.819222",
      "fitness": 0.8986732721203703,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:16:19.819440",
      "fitness": 0.7717812715023709,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:16:19.819694",
      "fitness": 0.8028681327790789,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:16:19.819955",
      "fitness": 0.8630562935965336,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:21:10.563913",
      "fitness": 0.7537278722170385,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:21:10.564279",
      "fitness": 0.6712019059877002,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:21:10.564552",
      "fitness": 0.8880984168575825,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:21:10.564859",
      "fitness": 0.7740786893315899,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:21:10.565153",
      "fitness": 0.8062680152332988,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:21:10.565405",
      "fitness": 0.6170524398737016,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:21:10.571788",
      "fitness": 0.8538509620690689,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:21:10.572060",
      "fitness": 0.5775587432822051,
      "description": "calculator: a + b"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:21:10.572322",
      "fitness": 0.5160808288772851,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:21:10.572612",
      "fitness": 0.6514973178999207,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:21:10.572871",
      "fitness": 0.8426040233523938,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:21:10.573122",
      "fitness": 0.6244023916617181,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:21:10.573371",
      "fitness": 0.6079056907841689,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:21:10.573647",
      "fitness": 0.8696107997322249,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:21:10.573906",
      "fitness": 0.7412374511939881,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:21:10.574160",
      "fitness": 0.8042386082179364,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:21:10.574393",
      "fitness": 0.5821601747028252,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:21:10.574637",
      "fitness": 0.6087478133608264,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:21:10.574875",
      "fitness": 0.6274338745299165,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:21:10.575124",
      "fitness": 0.8345298036391147,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:21:10.575363",
      "fitness": 0.7600671231562874,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:21:10.575601",
      "fitness": 0.8185954187105263,
      "description": "calculator: a + b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:21:10.575838",
      "fitness": 0.6601167744120506,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:21:10.576334",
      "fitness": 0.5321832016822593,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:21:10.576579",
      "fitness": 0.6855669080037973,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:21:10.576832",
      "fitness": 0.6145745593750996,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:21:10.577079",
      "fitness": 0.6692906026507789,
      "description": "calculator: a * b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:21:10.577330",
      "fitness": 0.7833853428293132,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:21:10.577579",
      "fitness": 0.6917638900716506,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:21:10.577820",
      "fitness": 0.5945123096963368,
      "description": "calculator: a * b"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:21:10.578131",
      "fitness": 0.8389724794143758,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:21:10.578394",
      "fitness": 0.7749900202470676,
      "description": "transformer: text.lower()"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T19:21:10.578648",
      "fitness": 0.6192202340907509,
      "description": "sequence_generator: i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:21:10.578934",
      "fitness": 0.672706563506843,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:21:10.579174",
      "fitness": 0.8743648249872162,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:21:10.579422",
      "fitness": 0.5670413165328777,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:26:15.676186",
      "fitness": 0.8369460842279446,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.676513",
      "fitness": 0.8775019014615169,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.676772",
      "fitness": 0.6025307669210862,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:26:15.677030",
      "fitness": 0.7672101279057939,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:26:15.677295",
      "fitness": 0.7369922611046255,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:26:15.683999",
      "fitness": 0.7415812964402514,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.684272",
      "fitness": 0.6660563865078973,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:26:15.684519",
      "fitness": 0.7210167654115429,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:26:15.684798",
      "fitness": 0.6766357101569026,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:26:15.685036",
      "fitness": 0.7267842711480405,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.685269",
      "fitness": 0.593636065792725,
      "description": "calculator: a * b"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:26:15.685520",
      "fitness": 0.634849527264389,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.685789",
      "fitness": 0.6617878601868771,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.686010",
      "fitness": 0.747401081199281,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.686261",
      "fitness": 0.8800185967998873,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.686479",
      "fitness": 0.6694088343953082,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:26:15.686730",
      "fitness": 0.6361492719709736,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:26:15.686976",
      "fitness": 0.6185021935040454,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:26:15.687210",
      "fitness": 0.8754374045128643,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.687451",
      "fitness": 0.5227623340516593,
      "description": "transformer: text.lower()"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.687667",
      "fitness": 0.6029972402549922,
      "description": "sequence_generator: i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.687941",
      "fitness": 0.8571703502904979,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:26:15.688186",
      "fitness": 0.6806713049898754,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:26:15.688463",
      "fitness": 0.594211356306924,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.688704",
      "fitness": 0.8640041427296977,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:26:15.688951",
      "fitness": 0.5942730108779204,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.689188",
      "fitness": 0.6064505797271043,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:26:15.689479",
      "fitness": 0.5072440470949907,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:26:15.689720",
      "fitness": 0.6830327971826594,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.689977",
      "fitness": 0.5796995033367671,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:26:15.690229",
      "fitness": 0.5067812308935874,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.690486",
      "fitness": 0.6140547047331584,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:26:15.690736",
      "fitness": 0.7516561902348299,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.690967",
      "fitness": 0.5408036669738638,
      "description": "calculator: a - b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:26:15.691212",
      "fitness": 0.6098176185714941,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:26:15.691446",
      "fitness": 0.557039315427739,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.691658",
      "fitness": 0.6270802703540365,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:26:15.691919",
      "fitness": 0.8922570596490871,
      "description": "transformer: text.upper()"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:26:15.692198",
      "fitness": 0.6899777229822683,
      "description": "sequence_generator: i"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:26:15.692451",
      "fitness": 0.5416207358055372,
      "description": "calculator: a + b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:26:15.692687",
      "fitness": 0.6084685291722914,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:30:00.681880",
      "fitness": 0.8433949638359488,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.682226",
      "fitness": 0.6982839157699368,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:30:00.682562",
      "fitness": 0.5543434560004477,
      "description": "calculator: a * b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.682803",
      "fitness": 0.694280674230418,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.683035",
      "fitness": 0.8807121738239541,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:30:00.683263",
      "fitness": 0.5168896267716528,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:30:00.689718",
      "fitness": 0.6390334337394143,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:30:00.690000",
      "fitness": 0.885990140175091,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:30:00.690265",
      "fitness": 0.883071086633519,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:30:00.690502",
      "fitness": 0.5378213753383139,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.690738",
      "fitness": 0.7225974862976028,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:30:00.691044",
      "fitness": 0.5583670813064665,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.691303",
      "fitness": 0.7278998903154307,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.691562",
      "fitness": 0.7537892279787142,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.691802",
      "fitness": 0.8870595502502752,
      "description": "transformer: text.lower()"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:30:00.692049",
      "fitness": 0.896854383243797,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:30:00.692347",
      "fitness": 0.8673646654663425,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.692607",
      "fitness": 0.654045393580413,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.692842",
      "fitness": 0.645157295155444,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:30:00.693100",
      "fitness": 0.5334845391586525,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.693346",
      "fitness": 0.5784868012420461,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.693591",
      "fitness": 0.5000562808659194,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:30:00.693890",
      "fitness": 0.5652501721811165,
      "description": "calculator: a - b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.694139",
      "fitness": 0.7499945911668183,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:30:00.694397",
      "fitness": 0.8419757680390603,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:30:00.694659",
      "fitness": 0.8019139045552379,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.694947",
      "fitness": 0.7832198530202452,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:30:00.695197",
      "fitness": 0.5433362154599619,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:30:00.695458",
      "fitness": 0.6766892596410243,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:30:00.695709",
      "fitness": 0.7152048449053148,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:30:00.695996",
      "fitness": 0.87391237412772,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:30:00.696249",
      "fitness": 0.7559521252120154,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:30:00.696496",
      "fitness": 0.7006155065279076,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:30:00.696783",
      "fitness": 0.780003794409281,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:30:00.697081",
      "fitness": 0.5250173537465809,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.697343",
      "fitness": 0.7727611494019337,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:30:00.697577",
      "fitness": 0.7010023902782563,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:30:00.697843",
      "fitness": 0.6917006489398267,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:33:40.106070",
      "fitness": 0.8298652204462695,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.106411",
      "fitness": 0.6242299618801923,
      "description": "transformer: text.lower()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:33:40.106673",
      "fitness": 0.5899950580912754,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:33:40.106964",
      "fitness": 0.5949951998553396,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:33:40.107244",
      "fitness": 0.5197039797194026,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:33:40.107534",
      "fitness": 0.8586843708633364,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:33:40.107782",
      "fitness": 0.6433013618313549,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.114196",
      "fitness": 0.7659855091875648,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:33:40.115050",
      "fitness": 0.6804478171488761,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:33:40.115808",
      "fitness": 0.858809722050099,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:33:40.116582",
      "fitness": 0.5811329629465171,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:33:40.117435",
      "fitness": 0.6189043221223616,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:33:40.118326",
      "fitness": 0.7987226421487934,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.118918",
      "fitness": 0.5698588993456317,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:33:40.119371",
      "fitness": 0.509582898031371,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.119762",
      "fitness": 0.8860630837092464,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:33:40.120146",
      "fitness": 0.7321218349124832,
      "description": "calculator: a * b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:33:40.120575",
      "fitness": 0.7771601073651828,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:33:40.120858",
      "fitness": 0.5133887302732744,
      "description": "transformer: text.lower()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.121076",
      "fitness": 0.5626514692284451,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:33:40.121319",
      "fitness": 0.6012957968665338,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:33:40.121552",
      "fitness": 0.73450100415324,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:33:40.121780",
      "fitness": 0.8278594768810531,
      "description": "calculator: a + b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.122007",
      "fitness": 0.8692004534392079,
      "description": "sequence_generator: i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:33:40.122271",
      "fitness": 0.6065574568058094,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:33:40.122508",
      "fitness": 0.8223037307090617,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:33:40.122740",
      "fitness": 0.6839028233067779,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:33:40.122979",
      "fitness": 0.6316798232522101,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.123208",
      "fitness": 0.8439055413645694,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:33:40.123448",
      "fitness": 0.5458244231272326,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:33:40.123692",
      "fitness": 0.811803175260926,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:33:40.123919",
      "fitness": 0.5405590306406978,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.124130",
      "fitness": 0.5661328260534099,
      "description": "calculator: a + b"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:33:40.124388",
      "fitness": 0.690315685000484,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.124708",
      "fitness": 0.8821374946028158,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:33:40.125038",
      "fitness": 0.8347840537953745,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.125429",
      "fitness": 0.7251907010324309,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:33:40.125765",
      "fitness": 0.6576430240940776,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:33:40.126163",
      "fitness": 0.7968571001123614,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:33:40.126417",
      "fitness": 0.5799757468740175,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:33:40.126684",
      "fitness": 0.8141942050503076,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.553998",
      "fitness": 0.7999995538683373,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:36:59.554346",
      "fitness": 0.5794034825278795,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:36:59.554639",
      "fitness": 0.6628683737570393,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:36:59.554907",
      "fitness": 0.8688511180102623,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:36:59.555157",
      "fitness": 0.8707147572517995,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:36:59.555423",
      "fitness": 0.8060175314283557,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:36:59.562093",
      "fitness": 0.8340354357153776,
      "description": "transformer: text.upper()"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:36:59.562641",
      "fitness": 0.7181324136218301,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:36:59.563163",
      "fitness": 0.5602252460681751,
      "description": "transformer: text.upper()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.563604",
      "fitness": 0.5087079642451282,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:36:59.564029",
      "fitness": 0.8460053542643986,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:36:59.564523",
      "fitness": 0.6229258009620036,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:36:59.564959",
      "fitness": 0.5575550640832078,
      "description": "transformer: text.lower()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:36:59.565374",
      "fitness": 0.5330099103822711,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:36:59.565806",
      "fitness": 0.6459590737539427,
      "description": "calculator: a - b"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.566233",
      "fitness": 0.5825035964314661,
      "description": "calculator: a * b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:36:59.566657",
      "fitness": 0.6256563724363645,
      "description": "transformer: text.upper()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.567087",
      "fitness": 0.7926142642446807,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:36:59.567509",
      "fitness": 0.8499715161460291,
      "description": "calculator: a + b"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.567881",
      "fitness": 0.8589980713413468,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:36:59.568223",
      "fitness": 0.5863129052389235,
      "description": "transformer: text.lower()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:36:59.568547",
      "fitness": 0.5276093280137265,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:36:59.568888",
      "fitness": 0.612458042735326,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.569222",
      "fitness": 0.5593736278063531,
      "description": "calculator: a * b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:36:59.569555",
      "fitness": 0.8396017861337381,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:36:59.569807",
      "fitness": 0.5168231562222181,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:36:59.570054",
      "fitness": 0.7538405735008767,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:36:59.570307",
      "fitness": 0.7256461339945435,
      "description": "transformer: text.upper()"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:36:59.570545",
      "fitness": 0.5333846885918089,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:36:59.570838",
      "fitness": 0.6396653672464072,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:36:59.571093",
      "fitness": 0.6650334844157088,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:36:59.571338",
      "fitness": 0.7760385897091993,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:36:59.571578",
      "fitness": 0.7630373460742671,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:36:59.571813",
      "fitness": 0.8418450059356115,
      "description": "sequence_generator: i"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:36:59.572092",
      "fitness": 0.5687631909915751,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:36:59.572350",
      "fitness": 0.7457616849628388,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.530617",
      "fitness": 0.8599487356034654,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:40:02.530948",
      "fitness": 0.8793672646020154,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.531220",
      "fitness": 0.8824792032284862,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:40:02.531475",
      "fitness": 0.5857700230003736,
      "description": "calculator: a + b"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:40:02.531729",
      "fitness": 0.751022235684909,
      "description": "calculator: a + b"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:40:02.538746",
      "fitness": 0.8672850368925551,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:40:02.539396",
      "fitness": 0.859843564613098,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:40:02.539832",
      "fitness": 0.8844195968553383,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:40:02.540253",
      "fitness": 0.6524176712507177,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:40:02.540690",
      "fitness": 0.6493312545538448,
      "description": "calculator: a + b"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:40:02.541115",
      "fitness": 0.5117109326720638,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:40:02.541547",
      "fitness": 0.6886198676305241,
      "description": "transformer: text.upper()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:40:02.542032",
      "fitness": 0.5328412047434075,
      "description": "calculator: a - b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:40:02.542517",
      "fitness": 0.6568865182313934,
      "description": "sequence_generator: i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.542969",
      "fitness": 0.851944525106298,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:40:02.543350",
      "fitness": 0.5266069369783865,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:40:02.543626",
      "fitness": 0.5772436317582116,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.543860",
      "fitness": 0.809208411618408,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:40:02.544082",
      "fitness": 0.7650259338959184,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:40:02.544307",
      "fitness": 0.7520897088180171,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:40:02.544548",
      "fitness": 0.8974105591671633,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:40:02.544784",
      "fitness": 0.7962798827177029,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:40:02.545009",
      "fitness": 0.8122293866478376,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:40:02.545228",
      "fitness": 0.6034395321013082,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:40:02.545459",
      "fitness": 0.723682822941735,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:40:02.545703",
      "fitness": 0.7014118716444557,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.545972",
      "fitness": 0.572078073853385,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:40:02.546206",
      "fitness": 0.7316815783177208,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:40:02.546467",
      "fitness": 0.784958126256331,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:40:02.546730",
      "fitness": 0.7879667361464884,
      "description": "transformer: text.lower()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:40:02.546966",
      "fitness": 0.6292701181720691,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:40:02.547193",
      "fitness": 0.6195376992596102,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.547419",
      "fitness": 0.6582773622690559,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:40:02.547638",
      "fitness": 0.7563735969634806,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:40:02.547860",
      "fitness": 0.7636847592027904,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:44:03.828649",
      "fitness": 0.7304467044750382,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:44:03.828962",
      "fitness": 0.5811203498068271,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:44:03.829215",
      "fitness": 0.5156139120196268,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.829488",
      "fitness": 0.7564966830740112,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.829724",
      "fitness": 0.532296118487561,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:44:03.829995",
      "fitness": 0.6905165365817829,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.830257",
      "fitness": 0.6119404850565889,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:44:03.830508",
      "fitness": 0.7833964342342254,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:44:03.836710",
      "fitness": 0.8132294416204182,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:44:03.837123",
      "fitness": 0.6784650831546223,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:44:03.837438",
      "fitness": 0.7485947207516044,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.837703",
      "fitness": 0.5986473644007934,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.837921",
      "fitness": 0.8004611282505569,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:44:03.838144",
      "fitness": 0.6191608305134763,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.838356",
      "fitness": 0.5930257432756408,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:44:03.838585",
      "fitness": 0.7145541934099657,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.838823",
      "fitness": 0.7794611578240911,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:44:03.839063",
      "fitness": 0.5478968534545209,
      "description": "sequence_generator: i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:44:03.839329",
      "fitness": 0.610430937470709,
      "description": "transformer: text.upper()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.839547",
      "fitness": 0.5434189575501667,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:44:03.839786",
      "fitness": 0.8780612533347754,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:44:03.840024",
      "fitness": 0.7799276619230303,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.840257",
      "fitness": 0.6455858073766809,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:44:03.840521",
      "fitness": 0.7647598406241063,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:44:03.840761",
      "fitness": 0.728958448209684,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:44:03.840996",
      "fitness": 0.5770993684419685,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.841231",
      "fitness": 0.8936790524028795,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:44:03.841460",
      "fitness": 0.7175465948667575,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:44:03.841683",
      "fitness": 0.5789809635206817,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:44:03.841921",
      "fitness": 0.5216331203816317,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.842183",
      "fitness": 0.5914573574294872,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.842396",
      "fitness": 0.6897430828243051,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:44:03.842661",
      "fitness": 0.6631878236283256,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.842900",
      "fitness": 0.5598767379625504,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.843117",
      "fitness": 0.5102512106394886,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:44:03.843380",
      "fitness": 0.645292634433611,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:44:03.843619",
      "fitness": 0.8917953018370786,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:44:03.843842",
      "fitness": 0.5822139279162776,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:44:03.844061",
      "fitness": 0.5427040506733944,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.844284",
      "fitness": 0.7229589333686339,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:44:03.844507",
      "fitness": 0.6794289153716566,
      "description": "transformer: text.lower()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:44:03.844728",
      "fitness": 0.5301089153889454,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.844966",
      "fitness": 0.750456654232527,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.845176",
      "fitness": 0.840862740583336,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:44:03.845406",
      "fitness": 0.8965588451188888,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:44:03.845613",
      "fitness": 0.5252177431571436,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:44:03.845880",
      "fitness": 0.5925267846021948,
      "description": "sequence_generator: i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:47:43.713813",
      "fitness": 0.5364192312385723,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.714170",
      "fitness": 0.6960189677650934,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:47:43.714455",
      "fitness": 0.7098717645968101,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:47:43.721940",
      "fitness": 0.7102686919670446,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:47:43.722589",
      "fitness": 0.8836360692089271,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.723167",
      "fitness": 0.8413254286197682,
      "description": "calculator: a * b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:47:43.723834",
      "fitness": 0.6745099043876022,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:47:43.724264",
      "fitness": 0.8536734030783879,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:47:43.724706",
      "fitness": 0.7123029942065814,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.725264",
      "fitness": 0.5162965089957197,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:47:43.725760",
      "fitness": 0.50415767861042,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:47:43.726242",
      "fitness": 0.6648117491877379,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:47:43.726671",
      "fitness": 0.7592773651352303,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.727151",
      "fitness": 0.554023610794449,
      "description": "calculator: a * b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:47:43.727585",
      "fitness": 0.7819359669922794,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:47:43.728002",
      "fitness": 0.5993823421342637,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.728410",
      "fitness": 0.6233109503966546,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 4,
      "parent_id": "e622ac3b",
      "created_at": "2026-01-05T19:47:43.728857",
      "fitness": 0.6396316530211295,
      "description": "sequence_generator: i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:47:43.729167",
      "fitness": 0.6043650319241682,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:47:43.729434",
      "fitness": 0.5010043686739243,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:47:43.729694",
      "fitness": 0.7410680933461391,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:47:43.729952",
      "fitness": 0.7623845734832764,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:47:43.730254",
      "fitness": 0.8077725041861525,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.730506",
      "fitness": 0.7209659793171983,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:47:43.730770",
      "fitness": 0.7419624779959202,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:47:43.731024",
      "fitness": 0.7073648376672056,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:47:43.731280",
      "fitness": 0.7608735986240998,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:47:43.731539",
      "fitness": 0.8630682579421315,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:47:43.731834",
      "fitness": 0.6570760537308209,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:47:43.732237",
      "fitness": 0.6074031393193545,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:47:43.732484",
      "fitness": 0.6772477294748493,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:47:43.732731",
      "fitness": 0.8343162859078679,
      "description": "sequence_generator: i"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:47:43.733015",
      "fitness": 0.6647264670129809,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:47:43.733279",
      "fitness": 0.8009629904399149,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:47:43.733541",
      "fitness": 0.8223930200007177,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:47:43.733800",
      "fitness": 0.8907864510379893,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:47:43.734059",
      "fitness": 0.7579521030137271,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:49:55.080146",
      "fitness": 0.6773095821516282,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.080544",
      "fitness": 0.6983008268263988,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:49:55.080815",
      "fitness": 0.8088221220602001,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.081041",
      "fitness": 0.8252216589835073,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:49:55.081282",
      "fitness": 0.7294463892911199,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:49:55.088019",
      "fitness": 0.7748143856022471,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:49:55.088306",
      "fitness": 0.517712583344697,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:49:55.088544",
      "fitness": 0.7593883958235088,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.088784",
      "fitness": 0.7013244722459043,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:49:55.089066",
      "fitness": 0.6331937320536014,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.089314",
      "fitness": 0.6951338604314927,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:49:55.089560",
      "fitness": 0.7822352872812086,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:49:55.089809",
      "fitness": 0.8151264762525312,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:49:55.090068",
      "fitness": 0.6927750014936268,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:49:55.090320",
      "fitness": 0.7137422788111837,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:49:55.090548",
      "fitness": 0.7780271709324698,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:49:55.090783",
      "fitness": 0.693946214137636,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:49:55.091038",
      "fitness": 0.5504705035015341,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:49:55.091269",
      "fitness": 0.6186850936921477,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:49:55.091532",
      "fitness": 0.6543852413129854,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.091771",
      "fitness": 0.5722854199885992,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:49:55.092015",
      "fitness": 0.5104103401014799,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.092247",
      "fitness": 0.8527267431616823,
      "description": "calculator: a + b"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:49:55.092482",
      "fitness": 0.8578936001375004,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:49:55.092731",
      "fitness": 0.6882887469108983,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.092954",
      "fitness": 0.8144691133009574,
      "description": "calculator: a * b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:49:55.093207",
      "fitness": 0.5216853566404358,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:49:55.093451",
      "fitness": 0.571086012273201,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:49:55.093673",
      "fitness": 0.6888089643250174,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:49:55.093952",
      "fitness": 0.6029076090111395,
      "description": "transformer: text.upper()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:49:55.094206",
      "fitness": 0.7975707690298597,
      "description": "calculator: a - b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:49:55.094440",
      "fitness": 0.6450590330466046,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:49:55.094681",
      "fitness": 0.8446062352151447,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T19:49:55.094929",
      "fitness": 0.8214771268629948,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:49:55.095200",
      "fitness": 0.8303993736198043,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T19:49:55.095470",
      "fitness": 0.8241475877255866,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:49:55.095780",
      "fitness": 0.8837194014276268,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:49:55.096018",
      "fitness": 0.5303349047635278,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:52:01.800137",
      "fitness": 0.649287892978699,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.800482",
      "fitness": 0.8934597774335855,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:52:01.800755",
      "fitness": 0.7329642642291684,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:52:01.807998",
      "fitness": 0.8823651276466481,
      "description": "calculator: a * b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:52:01.808323",
      "fitness": 0.6833832390307998,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.808594",
      "fitness": 0.7243068816895804,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:52:01.808853",
      "fitness": 0.7047256762652774,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.809117",
      "fitness": 0.7281395759433589,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.809373",
      "fitness": 0.619106821367063,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.809661",
      "fitness": 0.6737820897150156,
      "description": "transformer: text.upper()"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:52:01.809934",
      "fitness": 0.8476784972148319,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:52:01.810264",
      "fitness": 0.5190582264629238,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:52:01.810511",
      "fitness": 0.6218096248657475,
      "description": "calculator: a + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.810785",
      "fitness": 0.6736859776849371,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.811102",
      "fitness": 0.714764897235252,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:52:01.811401",
      "fitness": 0.748853312394407,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.811697",
      "fitness": 0.8384118490237433,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:52:01.811964",
      "fitness": 0.5748663568086038,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.812211",
      "fitness": 0.8467512162212634,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:52:01.812467",
      "fitness": 0.7628380100975163,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:52:01.812751",
      "fitness": 0.5255585562435335,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:52:01.813003",
      "fitness": 0.8660404476297654,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.813276",
      "fitness": 0.6817019074382938,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.813528",
      "fitness": 0.849499207663091,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:52:01.813794",
      "fitness": 0.5237359877094495,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:52:01.814026",
      "fitness": 0.6053762038491132,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:52:01.814290",
      "fitness": 0.7233830401714373,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.814534",
      "fitness": 0.8155130271774617,
      "description": "transformer: text.lower()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.814761",
      "fitness": 0.7341591417998148,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.815030",
      "fitness": 0.7379807614660165,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.815266",
      "fitness": 0.8482607582665833,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:52:01.815516",
      "fitness": 0.8976826760203607,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:52:01.815765",
      "fitness": 0.794847928826995,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.816059",
      "fitness": 0.7152542282933725,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:52:01.816329",
      "fitness": 0.6981252219385734,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:52:01.816572",
      "fitness": 0.6419359376159122,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:52:01.816820",
      "fitness": 0.8968757525249182,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:54:07.476720",
      "fitness": 0.8033052871097097,
      "description": "transformer: text.upper()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T19:54:07.477087",
      "fitness": 0.7482840047104251,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:54:07.477393",
      "fitness": 0.555084264214048,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:54:07.477647",
      "fitness": 0.811328444153113,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:54:07.477908",
      "fitness": 0.7512411670270351,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:54:07.478178",
      "fitness": 0.7850661585274257,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:54:07.484561",
      "fitness": 0.8023675043256184,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:54:07.484877",
      "fitness": 0.8684427681206991,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:54:07.485182",
      "fitness": 0.686030465946538,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:54:07.485469",
      "fitness": 0.8606849058156414,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:54:07.485733",
      "fitness": 0.5695049101939266,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:54:07.485992",
      "fitness": 0.7156026923639681,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:54:07.486255",
      "fitness": 0.8294818268290357,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:54:07.486522",
      "fitness": 0.749321121378577,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:54:07.486803",
      "fitness": 0.8645493117245964,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:54:07.487062",
      "fitness": 0.5074367645769553,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:54:07.487344",
      "fitness": 0.7128462779849726,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:54:07.487605",
      "fitness": 0.5387307635904052,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:54:07.487873",
      "fitness": 0.5672768036808562,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:54:07.488147",
      "fitness": 0.8938001288300267,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:54:07.488411",
      "fitness": 0.7033392361632851,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:54:07.488673",
      "fitness": 0.5846803806806733,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:54:07.488950",
      "fitness": 0.8425001584951228,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:54:07.489209",
      "fitness": 0.8257397069870958,
      "description": "calculator: a * b"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:54:07.489462",
      "fitness": 0.8876788458359699,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T19:54:07.489722",
      "fitness": 0.5165436566706387,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:54:07.490007",
      "fitness": 0.6740118603489087,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:54:07.490365",
      "fitness": 0.6995932821905831,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:54:07.490622",
      "fitness": 0.5086942608805066,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:54:07.490896",
      "fitness": 0.540806892781645,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:54:07.491184",
      "fitness": 0.8478719981728543,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:54:07.491455",
      "fitness": 0.8816217305332947,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:54:07.491726",
      "fitness": 0.5648907605337894,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:56:21.631626",
      "fitness": 0.647398788967762,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:56:21.631956",
      "fitness": 0.7990948780735736,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:56:21.632234",
      "fitness": 0.7405397784635348,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:56:21.639493",
      "fitness": 0.691979594329072,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:56:21.639944",
      "fitness": 0.6486561781675859,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:56:21.640288",
      "fitness": 0.6761239716365209,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.640537",
      "fitness": 0.8605912645810527,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:56:21.640790",
      "fitness": 0.8529924539849789,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.641029",
      "fitness": 0.5720126685851947,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:56:21.641292",
      "fitness": 0.8434465094626109,
      "description": "calculator: a * b"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:56:21.641535",
      "fitness": 0.5099498942544983,
      "description": "calculator: a * b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:56:21.641772",
      "fitness": 0.6695643525936197,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:56:21.642045",
      "fitness": 0.7703101299109674,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:56:21.642305",
      "fitness": 0.8444434739383668,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.642599",
      "fitness": 0.5635535206612436,
      "description": "sequence_generator: i"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T19:56:21.642965",
      "fitness": 0.7961395962596309,
      "description": "calculator: a * b"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.643258",
      "fitness": 0.541674890375951,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:56:21.643553",
      "fitness": 0.6646131819324544,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:56:21.643793",
      "fitness": 0.5464663632574391,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.644019",
      "fitness": 0.5389186772776772,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:56:21.644264",
      "fitness": 0.894366286083772,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:56:21.644505",
      "fitness": 0.5782029734942251,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:56:21.644769",
      "fitness": 0.6389134753557386,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:56:21.645014",
      "fitness": 0.6790831381002387,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:56:21.645242",
      "fitness": 0.7381434874064698,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.645454",
      "fitness": 0.6931286683007924,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:56:21.645675",
      "fitness": 0.5892854657228773,
      "description": "transformer: text.lower()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.645885",
      "fitness": 0.5664924764524851,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:56:21.646122",
      "fitness": 0.8716617218800486,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.646373",
      "fitness": 0.8363172147971585,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:56:21.646598",
      "fitness": 0.530741710158833,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:56:21.646856",
      "fitness": 0.8721641669642757,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:56:21.647086",
      "fitness": 0.6315635003484695,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:56:21.647325",
      "fitness": 0.7596413604657397,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:56:21.647550",
      "fitness": 0.6952181841585783,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:56:21.647772",
      "fitness": 0.7760159156218578,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:56:21.648008",
      "fitness": 0.6405102533064622,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:56:21.648260",
      "fitness": 0.5067850923878272,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:56:21.648506",
      "fitness": 0.5125443792840052,
      "description": "calculator: a + b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:59:00.312799",
      "fitness": 0.6571702214504597,
      "description": "sequence_generator: i"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T19:59:00.313350",
      "fitness": 0.7043358087528568,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:59:00.313787",
      "fitness": 0.8565871985171308,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:59:00.314130",
      "fitness": 0.5050855790245052,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:59:00.314484",
      "fitness": 0.8203329856882919,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:59:00.314814",
      "fitness": 0.5595215195084606,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:59:00.315139",
      "fitness": 0.7426518117036787,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:59:00.320842",
      "fitness": 0.7435351633041443,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:59:00.321164",
      "fitness": 0.6695246268116506,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:59:00.321423",
      "fitness": 0.5504870162675214,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T19:59:00.321662",
      "fitness": 0.7406995107929386,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T19:59:00.321970",
      "fitness": 0.5991260496743103,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:59:00.322235",
      "fitness": 0.5096193232475543,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:59:00.322540",
      "fitness": 0.559068229497365,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T19:59:00.322797",
      "fitness": 0.8791739018792131,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:59:00.323076",
      "fitness": 0.6448363441252895,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T19:59:00.323372",
      "fitness": 0.5259529989314298,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:59:00.323619",
      "fitness": 0.577868417657946,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:59:00.323911",
      "fitness": 0.6488709263395261,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:59:00.324210",
      "fitness": 0.5397623491039671,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:59:00.324499",
      "fitness": 0.5510008861104732,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T19:59:00.324744",
      "fitness": 0.5889617240385124,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:59:00.325004",
      "fitness": 0.6200152906519848,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T19:59:00.325248",
      "fitness": 0.556841475405929,
      "description": "calculator: a + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:59:00.325516",
      "fitness": 0.7539663820227627,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:59:00.325767",
      "fitness": 0.6578633958373623,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T19:59:00.326033",
      "fitness": 0.8479093919873932,
      "description": "calculator: a * b"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T19:59:00.326291",
      "fitness": 0.5458943729376894,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T19:59:00.326538",
      "fitness": 0.786810731669346,
      "description": "calculator: a - b"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:59:00.326789",
      "fitness": 0.5966550138885083,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T19:59:00.327056",
      "fitness": 0.8949672158402415,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:59:00.327319",
      "fitness": 0.6002851992976477,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T19:59:00.327581",
      "fitness": 0.5393442623250141,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:59:00.327814",
      "fitness": 0.8827377486873023,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T19:59:00.328056",
      "fitness": 0.827025953341248,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T19:59:00.328266",
      "fitness": 0.7746530284055464,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:01:48.294693",
      "fitness": 0.8868345200279405,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:01:48.295063",
      "fitness": 0.589592210657707,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:01:48.302566",
      "fitness": 0.61450350136615,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:01:48.302883",
      "fitness": 0.6767191929183024,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:01:48.303184",
      "fitness": 0.7687162523478784,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:01:48.303546",
      "fitness": 0.8437483479483041,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:01:48.303859",
      "fitness": 0.8908941645810033,
      "description": "sequence_generator: i"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:01:48.304140",
      "fitness": 0.7940545354881645,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:01:48.304411",
      "fitness": 0.7102315145784676,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.304679",
      "fitness": 0.8884562188279299,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.304920",
      "fitness": 0.7089438406600383,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:01:48.305150",
      "fitness": 0.5543613220205084,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:01:48.305377",
      "fitness": 0.7078903602187795,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:01:48.305602",
      "fitness": 0.8860172037538854,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:01:48.305820",
      "fitness": 0.5990551369001222,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:01:48.306088",
      "fitness": 0.8960004468991785,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:01:48.306328",
      "fitness": 0.6081289613525499,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:01:48.306554",
      "fitness": 0.5327800206334584,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.306792",
      "fitness": 0.7393655914169905,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:01:48.307012",
      "fitness": 0.8411911648072488,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:01:48.307245",
      "fitness": 0.5798933069619128,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:01:48.307478",
      "fitness": 0.5386089428665027,
      "description": "calculator: a * b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.307756",
      "fitness": 0.8648056921921754,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:01:48.307995",
      "fitness": 0.6848220091020012,
      "description": "calculator: a - b"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T20:01:48.308234",
      "fitness": 0.598172476182365,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:01:48.308498",
      "fitness": 0.6474376491437432,
      "description": "transformer: text.upper()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:01:48.308725",
      "fitness": 0.557275521918118,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:01:48.308965",
      "fitness": 0.721363626654778,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:01:48.309188",
      "fitness": 0.889947568360894,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.309413",
      "fitness": 0.5144605732324995,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.309646",
      "fitness": 0.6089738065504284,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T20:01:48.309870",
      "fitness": 0.7690007401816732,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:01:48.310144",
      "fitness": 0.8548844456243829,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.664313",
      "fitness": 0.658908494384399,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:04:01.664704",
      "fitness": 0.8041627775062984,
      "description": "calculator: a + b"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:04:01.665013",
      "fitness": 0.6497933784961043,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:04:01.665316",
      "fitness": 0.5298323709978978,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:04:01.672236",
      "fitness": 0.688043014252083,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.672586",
      "fitness": 0.7958905561279835,
      "description": "calculator: a * b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:04:01.672872",
      "fitness": 0.6393670587379416,
      "description": "transformer: text.lower()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.673131",
      "fitness": 0.5840528730047455,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:04:01.673434",
      "fitness": 0.5635167416907624,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:04:01.673723",
      "fitness": 0.5591716173740295,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:04:01.673999",
      "fitness": 0.7839719785865613,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.674278",
      "fitness": 0.8574232756878273,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:04:01.674544",
      "fitness": 0.8860567550372114,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.674790",
      "fitness": 0.6832206246390815,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.675099",
      "fitness": 0.6660105914857131,
      "description": "transformer: text.upper()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:04:01.675435",
      "fitness": 0.5264156935352953,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:04:01.675744",
      "fitness": 0.5489413075224284,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.676063",
      "fitness": 0.8707971055432482,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:04:01.676339",
      "fitness": 0.8545599344311294,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:04:01.676650",
      "fitness": 0.7202617802550157,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.677022",
      "fitness": 0.7273185036548839,
      "description": "transformer: text.upper()"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:04:01.677273",
      "fitness": 0.668402064822749,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.677586",
      "fitness": 0.8014958566965109,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:04:01.677918",
      "fitness": 0.7189031054150122,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.678172",
      "fitness": 0.7391058402360879,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 10,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:04:01.678457",
      "fitness": 0.5115572298830396,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:04:01.678703",
      "fitness": 0.7088851357008303,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:04:01.678946",
      "fitness": 0.5260220561307272,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.679185",
      "fitness": 0.5222912496069662,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:04:01.679423",
      "fitness": 0.5328037977089495,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:04:01.679674",
      "fitness": 0.8326581148445118,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.679933",
      "fitness": 0.6257127111569034,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.680202",
      "fitness": 0.6622566785805506,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:04:01.680444",
      "fitness": 0.5374132692802462,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:04:01.680722",
      "fitness": 0.7931275246353262,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:04:01.680975",
      "fitness": 0.5900900630884188,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:04:01.681233",
      "fitness": 0.6886113424013489,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:07:26.549894",
      "fitness": 0.7685647612861676,
      "description": "transformer: text.lower()"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:07:26.550225",
      "fitness": 0.8868705351312667,
      "description": "sequence_generator: i"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:07:26.550515",
      "fitness": 0.6654930555446055,
      "description": "calculator: a - b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:07:26.550775",
      "fitness": 0.7013894328930993,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 4,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T20:07:26.551020",
      "fitness": 0.6974237149601963,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:07:26.551305",
      "fitness": 0.8633262058765191,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:07:26.551568",
      "fitness": 0.7214340024343896,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.551820",
      "fitness": 0.6433963379692929,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.557771",
      "fitness": 0.72942405414406,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.558055",
      "fitness": 0.6185089081221973,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:07:26.558319",
      "fitness": 0.7695002070746462,
      "description": "calculator: a + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:07:26.558593",
      "fitness": 0.7657923036730975,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.558856",
      "fitness": 0.8338179968910877,
      "description": "transformer: text.lower()"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T20:07:26.559120",
      "fitness": 0.6771290200983917,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.559418",
      "fitness": 0.5002971130452928,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.559695",
      "fitness": 0.5062630181120085,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:07:26.559964",
      "fitness": 0.8295334172142956,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:07:26.560245",
      "fitness": 0.7928888458447134,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.560521",
      "fitness": 0.8663551971337524,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.560792",
      "fitness": 0.7923240012006776,
      "description": "transformer: text.upper()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:07:26.561052",
      "fitness": 0.7453723655407837,
      "description": "calculator: a - b"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:07:26.561319",
      "fitness": 0.5931694945919801,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:07:26.561591",
      "fitness": 0.6259662957238618,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:07:26.561856",
      "fitness": 0.5875939710287476,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:07:26.562110",
      "fitness": 0.6470009052982966,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:07:26.562374",
      "fitness": 0.7708502644491362,
      "description": "calculator: a + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:07:26.562634",
      "fitness": 0.6642912146488201,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:07:26.562891",
      "fitness": 0.7581699937424073,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.563182",
      "fitness": 0.7025672951873947,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:07:26.563459",
      "fitness": 0.5759665520813226,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:07:26.563720",
      "fitness": 0.5418794355691092,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.564016",
      "fitness": 0.7567815154947942,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.564269",
      "fitness": 0.783147901947582,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.564539",
      "fitness": 0.6759081903165448,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.564794",
      "fitness": 0.6282885278539114,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:07:26.565050",
      "fitness": 0.6961636702383258,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.565305",
      "fitness": 0.5897980600281219,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:07:26.565561",
      "fitness": 0.5646670808145797,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T20:07:26.565815",
      "fitness": 0.7791042286871495,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:07:26.566109",
      "fitness": 0.7842968843759295,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:07:26.566356",
      "fitness": 0.7270577334568287,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.566642",
      "fitness": 0.8202233792104174,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:07:26.566913",
      "fitness": 0.5180271709162182,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:07:26.567164",
      "fitness": 0.645272138683634,
      "description": "transformer: text.upper()"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:07:26.567403",
      "fitness": 0.601612796404798,
      "description": "sequence_generator: i"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:07:26.567687",
      "fitness": 0.5167994570603502,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.567949",
      "fitness": 0.7770969514434278,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.568202",
      "fitness": 0.785434253863357,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:07:26.568469",
      "fitness": 0.8937233303288221,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:07:26.568743",
      "fitness": 0.5636781148131761,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.569015",
      "fitness": 0.8648827492778968,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:07:26.569281",
      "fitness": 0.7292099530612743,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:07:26.569538",
      "fitness": 0.6179418014907223,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:07:26.569803",
      "fitness": 0.5703484608661387,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.668283",
      "fitness": 0.6146021966004015,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.668629",
      "fitness": 0.5014095967887698,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:10:45.668922",
      "fitness": 0.5667127346631422,
      "description": "calculator: a + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:10:45.669201",
      "fitness": 0.7741438178499354,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.669474",
      "fitness": 0.6080911193003904,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T20:10:45.669738",
      "fitness": 0.5115079812846509,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:10:45.670032",
      "fitness": 0.5801493807549031,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.676129",
      "fitness": 0.5757285881776397,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.676441",
      "fitness": 0.5234510581111183,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:10:45.676717",
      "fitness": 0.6582834856754631,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:10:45.677003",
      "fitness": 0.5028622098860576,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.677288",
      "fitness": 0.8128226821188487,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.677629",
      "fitness": 0.7910085187913314,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:10:45.677978",
      "fitness": 0.7223391620109935,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.678211",
      "fitness": 0.6273059406578961,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:10:45.678503",
      "fitness": 0.6148243464076708,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:10:45.678737",
      "fitness": 0.653702808509159,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.678977",
      "fitness": 0.8903196165335763,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:10:45.679209",
      "fitness": 0.5397301220727893,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:10:45.679480",
      "fitness": 0.8922432575311905,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.679700",
      "fitness": 0.8517292846158415,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.679938",
      "fitness": 0.5898209939786924,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T20:10:45.680195",
      "fitness": 0.8217992815350059,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:10:45.680460",
      "fitness": 0.6618651532072706,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.680705",
      "fitness": 0.5094863644326557,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T20:10:45.680937",
      "fitness": 0.5194444560616397,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:10:45.681200",
      "fitness": 0.5791604734967136,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:10:45.681460",
      "fitness": 0.7854872390075056,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:10:45.681718",
      "fitness": 0.5492759043800227,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:10:45.681962",
      "fitness": 0.8593222501945401,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.682208",
      "fitness": 0.739384231017483,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:10:45.682452",
      "fitness": 0.8814695419200598,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.682693",
      "fitness": 0.5464173033845744,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:10:45.682920",
      "fitness": 0.5202183284703907,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:10:45.683158",
      "fitness": 0.5100745291893334,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.683398",
      "fitness": 0.751777315398447,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.683641",
      "fitness": 0.7628892014222868,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.683873",
      "fitness": 0.8500174525583439,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.684099",
      "fitness": 0.5537144259279725,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:10:45.684324",
      "fitness": 0.6421509968203198,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.684549",
      "fitness": 0.5013453754914375,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.684770",
      "fitness": 0.7481994569568143,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:10:45.684996",
      "fitness": 0.5788134121114545,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T20:10:45.685232",
      "fitness": 0.6653775672507556,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.685479",
      "fitness": 0.7223138224684937,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "e622ac3b",
      "created_at": "2026-01-05T20:10:45.685727",
      "fitness": 0.7936740677705899,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:10:45.685993",
      "fitness": 0.8976340325020444,
      "description": "calculator: a + b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:10:45.686232",
      "fitness": 0.6156778582065953,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:10:45.686460",
      "fitness": 0.6889957826624665,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:10:45.686700",
      "fitness": 0.5906307574905282,
      "description": "calculator: a - b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:10:45.686936",
      "fitness": 0.5376095302990123,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.687150",
      "fitness": 0.5016823561297388,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:10:45.687415",
      "fitness": 0.7149974411274548,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:10:45.687643",
      "fitness": 0.6905310133691097,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.687865",
      "fitness": 0.5659980541101217,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:10:45.688142",
      "fitness": 0.5077871253934989,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.688361",
      "fitness": 0.6532868364254667,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:10:45.688585",
      "fitness": 0.749615017928401,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.688804",
      "fitness": 0.8118047810916538,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T20:10:45.689073",
      "fitness": 0.8737040676254229,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:10:45.689317",
      "fitness": 0.7160181287741875,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:10:45.689551",
      "fitness": 0.7440032586720127,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:13:59.183736",
      "fitness": 0.605915032479209,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:13:59.184084",
      "fitness": 0.5888889613323557,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.191745",
      "fitness": 0.5523116023712886,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:13:59.192314",
      "fitness": 0.7652632941871618,
      "description": "calculator: a - b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:13:59.192758",
      "fitness": 0.8094725924270947,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:13:59.193183",
      "fitness": 0.8119034926662736,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:13:59.193599",
      "fitness": 0.803325732160821,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:13:59.194007",
      "fitness": 0.8030569756847699,
      "description": "calculator: a - b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T20:13:59.194454",
      "fitness": 0.6314433187479206,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.195026",
      "fitness": 0.5301371055328967,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.195478",
      "fitness": 0.6360486944372739,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:13:59.195953",
      "fitness": 0.5658139618202116,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.196428",
      "fitness": 0.8477584498503734,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:13:59.196882",
      "fitness": 0.5273604548280724,
      "description": "calculator: a - b"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.197154",
      "fitness": 0.6042182091760296,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:13:59.197488",
      "fitness": 0.6190936003315486,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:13:59.197772",
      "fitness": 0.6493107907289903,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:13:59.198059",
      "fitness": 0.8016627550943365,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.198322",
      "fitness": 0.7629466023798432,
      "description": "calculator: a * b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:13:59.198612",
      "fitness": 0.6510048196314981,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:13:59.198885",
      "fitness": 0.6977190109712266,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:13:59.199163",
      "fitness": 0.7123429586149639,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.199431",
      "fitness": 0.6313058041777192,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:13:59.199717",
      "fitness": 0.5467297390713592,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:13:59.199996",
      "fitness": 0.5180214870813736,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:13:59.200273",
      "fitness": 0.6239765967707214,
      "description": "calculator: a * b"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T20:13:59.200550",
      "fitness": 0.6664235297170524,
      "description": "calculator: a * b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.200839",
      "fitness": 0.5528773366275912,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:13:59.201118",
      "fitness": 0.5201214485671399,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.201389",
      "fitness": 0.8249972499757612,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:13:59.201669",
      "fitness": 0.5489254092045899,
      "description": "calculator: a * b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.201992",
      "fitness": 0.5905879963098036,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.202299",
      "fitness": 0.5053055841107132,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T20:13:59.202543",
      "fitness": 0.5432430509103532,
      "description": "calculator: a + b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.202792",
      "fitness": 0.6233696785074166,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:13:59.203035",
      "fitness": 0.6323112164101211,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.203264",
      "fitness": 0.6776489956447148,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 10,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.203516",
      "fitness": 0.6241399134234193,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:13:59.203748",
      "fitness": 0.565337875635209,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:13:59.204004",
      "fitness": 0.8383770271471793,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.204239",
      "fitness": 0.822122230084432,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:13:59.204482",
      "fitness": 0.6193021629102565,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:13:59.204714",
      "fitness": 0.7696862730834164,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:13:59.204942",
      "fitness": 0.8388920803026494,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.205159",
      "fitness": 0.6129994210617138,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:13:59.205383",
      "fitness": 0.849872775032763,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:13:59.205622",
      "fitness": 0.8608554274263238,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.205858",
      "fitness": 0.5121433886268911,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.206080",
      "fitness": 0.5090694561897534,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.206306",
      "fitness": 0.7893023292238812,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:13:59.206529",
      "fitness": 0.6482445551275917,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:13:59.206765",
      "fitness": 0.6556861529058693,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:13:59.207001",
      "fitness": 0.5250080840164947,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:13:59.207244",
      "fitness": 0.5424755038849961,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:13:59.207483",
      "fitness": 0.575954089626226,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:13:59.207802",
      "fitness": 0.8942428315250524,
      "description": "transformer: text.upper()"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T20:13:59.208049",
      "fitness": 0.7857083143836013,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T20:16:51.751517",
      "fitness": 0.854619657973593,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.751889",
      "fitness": 0.7121041495990739,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.752155",
      "fitness": 0.5956378950364782,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:16:51.752398",
      "fitness": 0.8052180054547065,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.752641",
      "fitness": 0.6871144017531248,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:16:51.759442",
      "fitness": 0.5052546888903009,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.759677",
      "fitness": 0.7132871268186574,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.759916",
      "fitness": 0.7725662206492598,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:16:51.760179",
      "fitness": 0.8831323662448226,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.760406",
      "fitness": 0.760393386471248,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.760643",
      "fitness": 0.6111037649583789,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:16:51.760875",
      "fitness": 0.7025762991260782,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.761117",
      "fitness": 0.6704236288027936,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:16:51.761347",
      "fitness": 0.7944684625948997,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.761584",
      "fitness": 0.7965265859177932,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:16:51.761819",
      "fitness": 0.5657119162754822,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:16:51.762051",
      "fitness": 0.6820958627764322,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:16:51.762283",
      "fitness": 0.5584025557129039,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T20:16:51.762509",
      "fitness": 0.892581618830395,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.762769",
      "fitness": 0.533689385367206,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.762994",
      "fitness": 0.6194179422657466,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.763227",
      "fitness": 0.7444400074400026,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:16:51.763470",
      "fitness": 0.7790364988345981,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:16:51.763714",
      "fitness": 0.5074929325987141,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.763950",
      "fitness": 0.6475365507916747,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 10,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:16:51.764225",
      "fitness": 0.7778400382685807,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:16:51.764515",
      "fitness": 0.5085534891495949,
      "description": "calculator: a - b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:16:51.764757",
      "fitness": 0.5043941129824117,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.764989",
      "fitness": 0.7902973185686257,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:16:51.765258",
      "fitness": 0.5184346836945899,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.765488",
      "fitness": 0.747689155639663,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.765712",
      "fitness": 0.5379123728912993,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:16:51.765946",
      "fitness": 0.5301272531882102,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:16:51.766182",
      "fitness": 0.7452378202112836,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.766410",
      "fitness": 0.5309457416909177,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.766697",
      "fitness": 0.6769998367129335,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:16:51.767014",
      "fitness": 0.6420836948480021,
      "description": "transformer: text.lower()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:16:51.767303",
      "fitness": 0.6370622877171666,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.767541",
      "fitness": 0.6510889491268019,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:16:51.767781",
      "fitness": 0.6970273903748728,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.768003",
      "fitness": 0.8767740192849791,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.768266",
      "fitness": 0.5689473407691922,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.768506",
      "fitness": 0.7215076214159126,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.768730",
      "fitness": 0.6625291459493072,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:16:51.768952",
      "fitness": 0.7688991802570688,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.769180",
      "fitness": 0.5169876828390113,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.769395",
      "fitness": 0.8570774441236404,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.769640",
      "fitness": 0.6877101746662417,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.769865",
      "fitness": 0.7137051899845678,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:16:51.770155",
      "fitness": 0.6381935368205215,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.770376",
      "fitness": 0.6807339125229898,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T20:16:51.770639",
      "fitness": 0.6701531563465566,
      "description": "sequence_generator: i"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:16:51.770899",
      "fitness": 0.5568245176355346,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:16:51.771126",
      "fitness": 0.5797202855290196,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:16:51.771367",
      "fitness": 0.6407476708767148,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:16:51.771641",
      "fitness": 0.5262249716924438,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.771871",
      "fitness": 0.8294463861876074,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:16:51.772133",
      "fitness": 0.513743026400381,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:16:51.772351",
      "fitness": 0.8062209175892494,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f053ce3b",
      "created_at": "2026-01-05T20:19:51.252647",
      "fitness": 0.803685772457253,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:19:51.253011",
      "fitness": 0.7738600779226683,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.253269",
      "fitness": 0.6189353755209135,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T20:19:51.253517",
      "fitness": 0.6095955026438338,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.253750",
      "fitness": 0.6637713453620694,
      "description": "sequence_generator: i"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.254022",
      "fitness": 0.6437144402388673,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:19:51.254252",
      "fitness": 0.5083964034804975,
      "description": "transformer: text.upper()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:19:51.260765",
      "fitness": 0.7871052879591496,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:19:51.261277",
      "fitness": 0.7147922701132916,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:19:51.261668",
      "fitness": 0.6738094090004821,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.262097",
      "fitness": 0.6302150111915218,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.262568",
      "fitness": 0.5632413120306016,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:19:51.262995",
      "fitness": 0.6864141283696497,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.263456",
      "fitness": 0.7768583170916293,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:19:51.264012",
      "fitness": 0.5600057186664313,
      "description": "calculator: a - b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:19:51.264481",
      "fitness": 0.8245656029690609,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:19:51.264870",
      "fitness": 0.7102741345787964,
      "description": "calculator: a + b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.265246",
      "fitness": 0.6033930090762767,
      "description": "sequence_generator: i"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:19:51.265681",
      "fitness": 0.6596872919357145,
      "description": "calculator: a * b"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:19:51.266068",
      "fitness": 0.5519794810996653,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:19:51.266378",
      "fitness": 0.6581218136159057,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "4c3f529c",
      "created_at": "2026-01-05T20:19:51.266714",
      "fitness": 0.6683581651564066,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:19:51.267058",
      "fitness": 0.6313508940119528,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:19:51.267311",
      "fitness": 0.7373404592433193,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:19:51.267620",
      "fitness": 0.8755453261560227,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.267872",
      "fitness": 0.8499472844738637,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:19:51.268142",
      "fitness": 0.5939619822581875,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:19:51.268380",
      "fitness": 0.5380129656678423,
      "description": "calculator: a * b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T20:19:51.268615",
      "fitness": 0.8498795791339164,
      "description": "sequence_generator: i"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:19:51.268874",
      "fitness": 0.7064422285957024,
      "description": "calculator: a + b"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T20:19:51.269108",
      "fitness": 0.5926455783796333,
      "description": "calculator: a - b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:19:51.269338",
      "fitness": 0.6178761764184677,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.269557",
      "fitness": 0.5275990175124907,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:19:51.269834",
      "fitness": 0.8531719833309508,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:19:51.270084",
      "fitness": 0.885360955587643,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.270294",
      "fitness": 0.7183151318771676,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.270517",
      "fitness": 0.8190653216402728,
      "description": "transformer: text.lower()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "d176c393",
      "created_at": "2026-01-05T20:19:51.270734",
      "fitness": 0.8877951721125639,
      "description": "calculator: a + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.270964",
      "fitness": 0.830355371330421,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.271189",
      "fitness": 0.8618696993901569,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:19:51.271407",
      "fitness": 0.8923365384578137,
      "description": "calculator: a * b"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:19:51.271635",
      "fitness": 0.8536496381459372,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.271865",
      "fitness": 0.6099911185530837,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:19:51.272098",
      "fitness": 0.7950398749957797,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:19:51.272318",
      "fitness": 0.8807833190364348,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:19:51.272547",
      "fitness": 0.8867046553294766,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:19:51.272766",
      "fitness": 0.6197608616040732,
      "description": "transformer: text.lower()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:19:51.272981",
      "fitness": 0.6852509525854731,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:19:51.273204",
      "fitness": 0.6023821634403552,
      "description": "calculator: a + b"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:19:51.273448",
      "fitness": 0.5170020955109815,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:19:51.273681",
      "fitness": 0.8461178553053602,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 10,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:19:51.273900",
      "fitness": 0.5651790296857728,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:19:51.274119",
      "fitness": 0.6819663195249078,
      "description": "calculator: a * b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 4,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T20:19:51.274349",
      "fitness": 0.5122986869752193,
      "description": "sequence_generator: i"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:19:51.274591",
      "fitness": 0.6583928180762021,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:19:51.274840",
      "fitness": 0.7509128817752722,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:19:51.275063",
      "fitness": 0.5575576322933466,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:19:51.275283",
      "fitness": 0.5655602689475718,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:19:51.275498",
      "fitness": 0.8081957286569681,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.172686",
      "fitness": 0.7264720770282983,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.173112",
      "fitness": 0.5018510064513102,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:22:44.173395",
      "fitness": 0.5070610474946807,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.173644",
      "fitness": 0.5492367480342687,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.173876",
      "fitness": 0.5273718741753536,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:22:44.174241",
      "fitness": 0.7697532090637489,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 4,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:22:44.174727",
      "fitness": 0.7347322272916912,
      "description": "calculator: a * b"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.174973",
      "fitness": 0.7394684057976847,
      "description": "sequence_generator: i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:22:44.175247",
      "fitness": 0.5431440114614571,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.175496",
      "fitness": 0.722001610178013,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:22:44.175739",
      "fitness": 0.7696675021557681,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.175993",
      "fitness": 0.8341552711716289,
      "description": "transformer: text.lower()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:22:44.176228",
      "fitness": 0.5405019568546836,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:22:44.176471",
      "fitness": 0.5056183748314501,
      "description": "transformer: text.lower()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.176704",
      "fitness": 0.5507233109783519,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:22:44.176947",
      "fitness": 0.791815316441665,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.177186",
      "fitness": 0.668560887172946,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:22:44.177417",
      "fitness": 0.6742712396360477,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.177649",
      "fitness": 0.5082724822279838,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:22:44.177925",
      "fitness": 0.5232552804670432,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.178177",
      "fitness": 0.5543153491027898,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.178396",
      "fitness": 0.5696789369153655,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 5,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:22:44.178664",
      "fitness": 0.8644682790590514,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:22:44.178909",
      "fitness": 0.7754539602850172,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.179144",
      "fitness": 0.5202456358464959,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.179373",
      "fitness": 0.8750450561979635,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:22:44.179613",
      "fitness": 0.5744915611431893,
      "description": "transformer: text.lower()"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.179839",
      "fitness": 0.5748519686504854,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.180073",
      "fitness": 0.6444736026651454,
      "description": "calculator: a * b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.180313",
      "fitness": 0.6798330180914691,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.180535",
      "fitness": 0.8284398376774138,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:22:44.180816",
      "fitness": 0.7066177397052101,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:22:44.181091",
      "fitness": 0.5357284463826761,
      "description": "transformer: text.lower()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:22:44.181623",
      "fitness": 0.8916455964622858,
      "description": "calculator: a - b"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.181948",
      "fitness": 0.8242320681428608,
      "description": "calculator: a + b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.182291",
      "fitness": 0.6203656713771095,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:22:44.182622",
      "fitness": 0.6919230644201372,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:22:44.182988",
      "fitness": 0.6911527734461127,
      "description": "calculator: a * b"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.183333",
      "fitness": 0.7558662047216052,
      "description": "transformer: text.upper()"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:22:44.183624",
      "fitness": 0.8848270655661317,
      "description": "calculator: a + b"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "a59fa725",
      "created_at": "2026-01-05T20:22:44.183916",
      "fitness": 0.6069211000946262,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:22:44.184212",
      "fitness": 0.5788679465608779,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e2805c5c",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a * b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "5672bcda",
      "created_at": "2026-01-05T20:22:44.184535",
      "fitness": 0.7989415079730482,
      "description": "calculator: a * b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.184787",
      "fitness": 0.713675643319765,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.185017",
      "fitness": 0.6410903252405055,
      "description": "calculator: a + b"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.185256",
      "fitness": 0.8820757221692443,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.185492",
      "fitness": 0.6997017719839562,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:22:44.185723",
      "fitness": 0.8431561186303221,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:22:44.185953",
      "fitness": 0.6112588415946736,
      "description": "calculator: a + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.186189",
      "fitness": 0.8440283547933086,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.186414",
      "fitness": 0.5206250085080051,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.186794",
      "fitness": 0.5483975549299762,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.187034",
      "fitness": 0.7891184172730311,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 2,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.187275",
      "fitness": 0.8121072718366258,
      "description": "transformer: text.upper()"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:22:44.187503",
      "fitness": 0.7470855959791282,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 9,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:22:44.187750",
      "fitness": 0.8301213210722265,
      "description": "transformer: text.upper()"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.187965",
      "fitness": 0.7268224069493956,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "4c3f529c",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 3\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 1,
      "parent_id": "f2ab06e0",
      "created_at": "2026-01-05T20:22:44.188293",
      "fitness": 0.7007744714578019,
      "description": "sequence_generator: i ** 3"
    },
    {
      "id": "4cf8a692",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:22:44.188552",
      "fitness": 0.8821667719462225,
      "description": "sequence_generator: i"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:22:44.188813",
      "fitness": 0.6673783351128739,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:22:44.189057",
      "fitness": 0.7055183036153874,
      "description": "transformer: text.upper()"
    },
    {
      "id": "f2ab06e0",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i * 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 3,
      "parent_id": "4cf8a692",
      "created_at": "2026-01-05T20:22:44.189287",
      "fitness": 0.6813944002732966,
      "description": "sequence_generator: i * 2"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "c71dbb11",
      "created_at": "2026-01-05T20:26:16.876922",
      "fitness": 0.778309657823482,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "e97d47e5",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a ** 2 + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:26:16.877260",
      "fitness": 0.5335561449598928,
      "description": "calculator: a ** 2 + b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:26:16.877534",
      "fitness": 0.6342659944217939,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:26:16.877778",
      "fitness": 0.5002486118346444,
      "description": "transformer: text.lower()"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.878008",
      "fitness": 0.6590050409934456,
      "description": "sequence_generator: i ** 2"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:26:16.878283",
      "fitness": 0.5065733470283538,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 6,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:26:16.878516",
      "fitness": 0.8737136119755522,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:26:16.878741",
      "fitness": 0.8857864528401149,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e622ac3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = 2 ** i\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.878953",
      "fitness": 0.6227179231119045,
      "description": "sequence_generator: 2 ** i"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "724f86f3",
      "created_at": "2026-01-05T20:26:16.879219",
      "fitness": 0.8162714250866618,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 6,
      "parent_id": "e2805c5c",
      "created_at": "2026-01-05T20:26:16.879459",
      "fitness": 0.505852269787278,
      "description": "calculator: a - b"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:26:16.879693",
      "fitness": 0.8949873607653578,
      "description": "transformer: text.lower()"
    },
    {
      "id": "5672bcda",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return max(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 2,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:26:16.879932",
      "fitness": 0.8359122175315725,
      "description": "calculator: max(a, b)"
    },
    {
      "id": "c71dbb11",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a / b if b != 0 else 0\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.880158",
      "fitness": 0.5550202462366515,
      "description": "calculator: a / b if b != 0 else 0"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:26:16.880400",
      "fitness": 0.7982261119345619,
      "description": "transformer: text.upper()"
    },
    {
      "id": "d176c393",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a - b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:26:16.880627",
      "fitness": 0.511543672073369,
      "description": "calculator: a - b"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:26:16.880857",
      "fitness": 0.8321297901281594,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 1,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:26:16.881083",
      "fitness": 0.6096063930116776,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 4,
      "parent_id": "6d5bf468",
      "created_at": "2026-01-05T20:26:16.881302",
      "fitness": 0.5719795871315365,
      "description": "transformer: text.upper()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.881512",
      "fitness": 0.7700344196627087,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 8,
      "parent_id": "ebd78cb3",
      "created_at": "2026-01-05T20:26:16.881737",
      "fitness": 0.5498415581084679,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:26:16.881961",
      "fitness": 0.7421002861077792,
      "description": "transformer: text.upper()"
    },
    {
      "id": "6d5bf468",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text[::-1]\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 5,
      "parent_id": "c4a86447",
      "created_at": "2026-01-05T20:26:16.882179",
      "fitness": 0.728584157808271,
      "description": "transformer: text[::-1]"
    },
    {
      "id": "e315f58d",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.upper()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.882386",
      "fitness": 0.7569936998525545,
      "description": "transformer: text.upper()"
    },
    {
      "id": "724f86f3",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return abs(a - b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 3,
      "parent_id": "8eb3e53a",
      "created_at": "2026-01-05T20:26:16.882610",
      "fitness": 0.8787047010288485,
      "description": "calculator: abs(a - b)"
    },
    {
      "id": "c4a86447",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.lower()\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 3,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:26:16.882843",
      "fitness": 0.7109794319410951,
      "description": "transformer: text.lower()"
    },
    {
      "id": "e42c9598",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return text.replace(' ', '_')\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e42c9598",
      "created_at": "2026-01-05T20:26:16.883063",
      "fitness": 0.615741061782861,
      "description": "transformer: text.replace(' ', '_')"
    },
    {
      "id": "586ef65d",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = sum(range(i + 1))\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 2,
      "parent_id": "586ef65d",
      "created_at": "2026-01-05T20:26:16.883295",
      "fitness": 0.7974321669366687,
      "description": "sequence_generator: sum(range(i + 1))"
    },
    {
      "id": "a59fa725",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return min(a, b)\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.883551",
      "fitness": 0.5801276247240921,
      "description": "calculator: min(a, b)"
    },
    {
      "id": "8eb3e53a",
      "code": "\ndef calculate(a, b):\n    \"\"\"A calculator function.\"\"\"\n    return a + b\n\nif __name__ == \"__main__\":\n    print(f\"calculate(10, 5) = {calculate(10, 5)}\")\n",
      "generation": 1,
      "parent_id": "e97d47e5",
      "created_at": "2026-01-05T20:26:16.883796",
      "fitness": 0.87795233830396,
      "description": "calculator: a + b"
    },
    {
      "id": "ebd78cb3",
      "code": "\ndef transform(text):\n    \"\"\"Transform text.\"\"\"\n    return ' '.join(text.split()[::-1])\n\nif __name__ == \"__main__\":\n    print(transform(\"hello world\"))\n",
      "generation": 7,
      "parent_id": "e315f58d",
      "created_at": "2026-01-05T20:26:16.884028",
      "fitness": 0.6994143454758652,
      "description": "transformer: ' '.join(text.split()[::-1])"
    },
    {
      "id": "f053ce3b",
      "code": "\ndef sequence(n):\n    \"\"\"Generate a number sequence.\"\"\"\n    result = []\n    for i in range(n):\n        value = i ** 2\n        result.append(value)\n    return result\n\nif __name__ == \"__main__\":\n    print(sequence(10))\n",
      "generation": 0,
      "parent_id": null,
      "created_at": "2026-01-05T20:26:16.884251",
      "fitness": 0.7104621005283073,
      "description": "sequence_generator: i ** 2"
    }
  ],
  "last_updated": "2026-01-05T20:26:16.888907"
}