{
  "id": "python/packaging-parse-requirement-error",
  "signature": "TypeError: parse_requirement() missing 1 required positional argument: 'requirement_string'",
  "signature_zh": "TypeError：parse_requirement() 缺少 1 个必需的位置参数：'requirement_string'",
  "regex": "TypeError:\\ parse_requirement\\(\\)\\ missing\\ 1\\ required\\ positional\\ argument:\\ 'requirement_string'",
  "domain": "python",
  "category": "type_error",
  "subcategory": null,
  "root_cause": "The function was called without the required string argument, likely due to incorrect API usage.",
  "root_cause_type": "generic",
  "root_cause_zh": "函数调用时缺少必需的字符串参数，可能是由于 API 使用错误。",
  "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"
    },
    {
      "version": "3.11",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "3.12",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "An empty string is not a valid requirement; it will raise a different error.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Missing argument error persists regardless of passing style.",
      "fail_rate": 1.0,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "from packaging.requirements import Requirement; req = Requirement('requests>=2.0')",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "help(Requirement)  # shows correct usage",
      "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": 0.81,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-08-30",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}