python module_error ai_generated true

ImportError: 没有名为 'module_to_patch' 的模块

ImportError: No module named 'module_to_patch'

ID: python/unittest-mock-patch-import-error

其他格式: JSON · Markdown 中文 · English
80%修复率
85%置信度
0证据数
2025-07-25首次发现

版本兼容性

版本状态引入弃用备注
3.8 active — — —
3.9 active — — —
3.10 active — — —
3.11 active — — —
3.12 active — — —

根因分析

`@unittest.mock.patch('module_to_patch.ClassName')` 装饰器尝试修补一个不存在或不可导入的模块。

English

The `@unittest.mock.patch('module_to_patch.ClassName')` decorator tries to patch a module that does not exist or is not importable.

generic

解决方案

  1. 95% 成功率 
    Ensure the module path is correct: `@patch('my_package.module_to_patch.ClassName')`
  2. 90% 成功率 
    Use patch.object() with the actual class: `@patch.object(MyClass, 'method_name')`

无效尝试

常见但无效的做法:

  1. 60% 失败

    The module might be an internal part of the codebase that should be patched differently.

  2. 90% 失败

    Decorators are evaluated at import time; try-except cannot catch import errors in this context.