{
  "id": "python/django-url-reverse-extra-args",
  "signature": "django.urls.exceptions.NoReverseMatch: Reverse for 'profile' with arguments '('',)' not found. 1 pattern(s) tried: ['user/profile/(?P<username>[^/]+)/$']",
  "signature_zh": "Django URL反向匹配错误：使用参数'('',)'无法为'profile'反向解析。尝试了1个模式：['user/profile/(?P<username>[^/]+)/$']",
  "regex": "django\\.urls\\.exceptions\\.NoReverseMatch:\\ Reverse\\ for\\ 'profile'\\ with\\ arguments\\ '\\('',\\)'\\ not\\ found\\.\\ 1\\ pattern\\(s\\)\\ tried:\\ \\['user/profile/\\(\\?P<username>\\[\\^/\\]\\+\\)/\\$'\\]",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "Passing an empty string as a URL argument where a non-empty value is expected.",
  "root_cause_type": "generic",
  "root_cause_zh": "传递空字符串作为URL参数，但预期非空值。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Breaks DRY principle and URL maintainability.",
      "fail_rate": 0.4,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Causes 500 errors on pages.",
      "fail_rate": 0.3,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.9,
      "how": "Ensure the username is not empty: if username: url = reverse('profile', args=[username])",
      "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": 0.83,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-03-05",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}