# 错误：subprocess-exited-with-error

× python setup.py bdist_wheel 未成功运行。
│ 退出码：1
╰─> [12 行输出]
    ModuleNotFoundError: 没有名为 'Cython' 的模块

- **ID:** `python/pip-error-subprocess-exited-with-error`
- **领域:** python
- **类别:** install_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

PEP 517 构建后端子进程失败，因为 pyproject.toml 中声明的构建时依赖（例如 Cython）未安装在隔离的构建环境中。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 3.x | active | — | — |

## 解决方案

1. **** (88% 成功率)
   ```
   python -m pip install Cython numpy
python -m pip install --no-build-isolation the-package
   ```
2. **** (85% 成功率)
   ```
   python -m pip install --only-binary=:all: --extra-index-url https://download.pytorch.org/whl/cpu the-package
   ```

## 无效尝试

- **** — The isolated build env does not inherit the outer env, so Cython is still missing inside it. (70% 失败率)
- **** — Without isolation, the build runs in the current env, which still lacks Cython. (65% 失败率)
- **** — The package source is not yours to edit; pip re-downloads the pristine sdist. (90% 失败率)