{
  "id": "python/sqlalchemy-exc-invalid-request-query-on-closed-session",
  "signature": "sqlalchemy.exc.InvalidRequestError: This session is in 'closed' state. No further SQL can be emitted within this transaction.",
  "signature_zh": "此会话处于“关闭”状态。无法在此事务中发出更多 SQL。",
  "regex": "sqlalchemy\\.exc\\.InvalidRequestError:\\ This\\ session\\ is\\ in\\ 'closed'\\ state\\.\\ No\\ further\\ SQL\\ can\\ be\\ emitted\\ within\\ this\\ transaction\\.",
  "domain": "python",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "Attempting to execute a query on a session that has been explicitly closed or has ended its transaction.",
  "root_cause_type": "generic",
  "root_cause_zh": "尝试在已明确关闭或事务已结束的会话上执行查询。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Trying to reopen session",
      "why_fails": "",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "Using non-existent method",
      "why_fails": "",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Create new session",
      "success_rate": 0.95,
      "how": "Create a new session instance: new_session = Session(); new_session.query(User).all()",
      "condition": "",
      "sources": []
    },
    {
      "action": "Check session is_active",
      "success_rate": 0.85,
      "how": "Ensure the session is not closed prematurely by checking session.is_active before queries.",
      "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": "2025-10-05",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}