# Skipped: 评估条件 'sys.platform == "win32"' 引发 AttributeError: 模块 'sys' 没有属性 'platform'

- **ID:** `python/pytest-skipif-condition-evaluation-error`
- **领域:** python
- **类别:** runtime_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

@pytest.mark.skipif 中的条件引用了一个不存在的属性，通常是由于拼写错误（例如 'platfom' 而不是 'platform'）。

## 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)
   ```
   Correct the attribute name: `@pytest.mark.skipif(sys.platform == 'win32', reason='not on Windows')`
   ```
2. **** (90% 成功率)
   ```
   Use a function for complex conditions: `def is_win(): return sys.platform == 'win32'; @pytest.mark.skipif(is_win())`
   ```

## 无效尝试

- **** — This may cause the test to run on unsupported platforms and fail. (80% 失败率)
- **** — The condition string is evaluated at module level; try-except is not supported in that context. (90% 失败率)