# 错误：由于环境错误无法安装包：[Errno 13] 权限被拒绝：'/usr/local/lib/python3.10/site-packages/package'

- **ID:** `python/pip-install-permission-denied`
- **领域:** python
- **类别:** system_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

用户对系统 site-packages 目录没有写权限。

## 版本兼容性

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

## 解决方案

1. **Install with --user flag** (90% 成功率)
   ```
   pip install --user package_name
   ```
2. **Create a virtual environment** (95% 成功率)
   ```
   python -m venv myenv && source myenv/bin/activate && pip install package_name
   ```

## 无效尝试

- **Using sudo pip install** — Risky and may break system Python packages. (40% 失败率)
- **Changing directory permissions** — May cause system instability. (30% 失败率)