{
  "id": "python/sqlalchemy-orm-multiple-heads",
  "signature": "sqlalchemy.exc.InvalidRequestError: Multiple classes found for path 'User' in the registry of this declarative base. Please use a fully module-qualified path.",
  "signature_zh": "在此声明式基类的注册表中找到多个名为 'User' 的类。请使用完整模块限定路径。",
  "regex": "sqlalchemy\\.exc\\.InvalidRequestError:\\ Multiple\\ classes\\ found\\ for\\ path\\ 'User'\\ in\\ the\\ registry\\ of\\ this\\ declarative\\ base\\.\\ Please\\ use\\ a\\ fully\\ module\\-qualified\\ path\\.",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "Two different classes with the same name are registered in the same declarative base, often due to duplicate imports or class name collisions.",
  "root_cause_type": "generic",
  "root_cause_zh": "在同一个声明式基类中注册了两个同名类，通常由于重复导入或类名冲突。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Breaks existing references to the original class name in other parts of the code.",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Causes ambiguity in relationship resolution and can lead to unexpected behavior.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.9,
      "how": "# Use from app.models.user import User consistently\nfrom app.models.user import User\n# Avoid: from app.models import User if it's defined elsewhere",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "from app.models import User as UserModel\n# Use UserModel in code",
      "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": 0.84,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-01-22",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}