{
  "id": "python/pytest-fixture-request-param-error",
  "signature": "AttributeError: 'FixtureRequest' object has no attribute 'param'",
  "signature_zh": "属性错误：'FixtureRequest' 对象没有属性 'param'",
  "regex": "AttributeError:\\ 'FixtureRequest'\\ object\\ has\\ no\\ attribute\\ 'param'",
  "domain": "python",
  "category": "attribute_error",
  "subcategory": null,
  "root_cause": "在非参数化夹具中尝试访问 request.param，但该属性仅存在于参数化夹具中。",
  "root_cause_type": "generic",
  "root_cause_zh": "在非参数化夹具中尝试访问 request.param，但该属性仅存在于参数化夹具中。",
  "versions": [
    {
      "version": "7.4.0",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "可能不必要，且改变测试结构。",
      "fail_rate": 0.5,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "掩盖了设计问题，且属性不存在时应处理。",
      "fail_rate": 0.4,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 1.0,
      "how": "将夹具标记为 `@pytest.fixture(params=[...])` 才能访问 request.param。",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.8,
      "how": "通过 `request.getfixturevalue('fixture_name')` 获取夹具值，而非访问 param。",
      "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": "2025-02-20",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}