# packaging.version.InvalidVersion：无效版本：'1.0.0-rc1+build.123'

- **ID:** `python/packaging-invalid-version-string`
- **领域:** python
- **类别:** data_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

版本字符串不符合 PEP 440；本地版本标签在 '+' 后必须以数字开头。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 3.8 | active | — | — |
| 3.9 | active | — | — |
| 3.10 | active | — | — |
| 3.11 | active | — | — |
| 3.12 | active | — | — |

## 解决方案

1. **** (95% 成功率)
   ```
   version = '1.0.0rc1+build123'  # local label 'build123' starts with digit
   ```
2. **** (0% 成功率)
   ```
   from packaging.version import Version; v = Version('1.0.0rc1+build123')  # will raise error; fix the string first
   ```

## 无效尝试

- **** — Removing build metadata may lose important build information; parsing may still fail if other parts are invalid. (50% 失败率)
- **** — The version is still invalid per PEP 440; older libraries may not raise error but will parse incorrectly. (80% 失败率)