{
  "id": "python/pip-install-error-invalid-requirement-whitespace",
  "signature": "ERROR: Invalid requirement: 'package == 1.0.0'",
  "signature_zh": "错误：无效的依赖项：'package == 1.0.0'",
  "regex": "ERROR:\\ Invalid\\ requirement:\\ 'package\\ ==\\ 1\\.0\\.0'",
  "domain": "python",
  "category": "data_error",
  "subcategory": null,
  "root_cause": "The requirement string contains spaces around the operator, which is not allowed in pip requirement syntax.",
  "root_cause_type": "generic",
  "root_cause_zh": "依赖项字符串在运算符周围包含空格，这在 pip 依赖项语法中是不允许的。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Quoting does not fix the whitespace issue.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Newer pip still enforces no whitespace around operators.",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Force reinstall does not bypass parsing.",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.99,
      "how": "pip install package==1.0.0",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.95,
      "how": "echo 'package==1.0.0' > requirements.txt && pip install -r requirements.txt",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "Refer to pip's documentation on requirement specifiers.",
      "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": 0.88,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2025-07-10",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}