# 错误：包 'foo' 需要不同的 Python：3.8.10 不在 '>=3.9' 范围内

- **ID:** `python/pip-egg-info-requires-python`
- **领域:** python
- **类别:** install_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

该包在其元数据中声明 `requires-python = ">=3.9"`（或类似），而当前解释器版本不在允许范围内。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 3.7 | active | — | — |
| 3.8 | active | — | — |
| 3.9 | active | — | — |
| 3.10 | active | — | — |

## 解决方案

1. **** (90% 成功率)
   ```
   Upgrade the interpreter to a supported version (e.g. install Python 3.11) and recreate the venv.
   ```
2. **** (80% 成功率)
   ```
   Install an older release of the package that supports your Python: `pip install 'foo<2'` after checking `pip index versions foo`.
   ```

## 无效尝试

- **** — Installs a package that may use 3.9+ syntax and crash at import time. (50% 失败率)
- **** — The metadata check is independent of pip version. (80% 失败率)