{
  "id": "python/assertionerror-assert-equal-lists",
  "signature": "AssertionError: assert [1, 2, 3] == [1, 2, 4]",
  "signature_zh": "断言错误：断言 [1, 2, 3] == [1, 2, 4]",
  "regex": "AssertionError:\\ assert\\ \\[1,\\ 2,\\ 3\\]\\ ==\\ \\[1,\\ 2,\\ 4\\]",
  "domain": "python",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "Lists are compared element-wise; a mismatch in one element causes the entire assertion to fail.",
  "root_cause_type": "generic",
  "root_cause_zh": "列表逐元素比较；一个元素不匹配导致整个断言失败。",
  "versions": [
    {
      "version": "3.8",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.9",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.10",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Using assertEqual without understanding deep comparison",
      "why_fails": "assertEqual uses == which compares references for mutable objects; may not catch structural differences.",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    },
    {
      "action": "Manually iterating and comparing each element",
      "why_fails": "Redundant and error-prone; often misses edge cases like empty lists or type mismatches.",
      "fail_rate": 0.4,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Use assertListEqual for detailed diff output",
      "success_rate": 0.95,
      "how": "self.assertListEqual([1, 2, 3], [1, 2, 4])",
      "condition": "",
      "sources": []
    },
    {
      "action": "Convert to tuples before comparison",
      "success_rate": 0.85,
      "how": "assert tuple([1, 2, 3]) == tuple([1, 2, 4])",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.85,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-01-15",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}