安装enum包报错：AttributeError: module 'enum' has no attribute '__version__'

问题原因 #

Python 3.4及以后版本中，enum已经是标准库内置模块，完全不需要通过pip额外安装。你尝试安装的第三方enum包是给Python 2或更早版本设计的，它的代码依赖enum.__version__属性，但内置的enum模块根本没有这个属性，因此触发报错。而且这个第三方包已多年未维护，完全不适用于Python 3.4+版本。

解决方案 #

• 直接使用内置模块：代码里直接导入即可，无需安装任何包：

  import enum
  

• 卸载冲突的第三方包：如果之前误装了第三方enum包，执行以下命令卸载，避免和内置模块冲突：

  pip uninstall enum
  

• 兼容旧代码（可选）：如果项目依赖旧版第三方enum的特性，优先建议修改代码迁移到内置enum模块（功能更完善且官方维护）。实在无法修改的话，可考虑使用Python 3.3及以下版本，或在虚拟环境中隔离依赖，但强烈推荐优先迁移到内置模块。

报错信息 #

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> [20 lines of output]
    Traceback (most recent call last):
      File "C:\Program Files\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 353, in <module>
        main()
      File "C:\Program Files\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 335, in main
        json_out['return_val'] = hook(**hook_input['kwargs'])
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "C:\Program Files\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 118, in get_requires_for_build_wheel
        return hook(config_settings)
               ^^^^^^^^^^^^^^^^^^^^^
      File "C:\Users\Me\AppData\Local\Temp\pip-build-env-p0h71p7l\overlay\Lib\site-packages\setuptools\build_meta.py", line 325, in get_requires_for_build_wheel
        return self._get_build_requires(config_settings, requirements=['wheel'])
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "C:\Users\Me\AppData\Local\Temp\pip-build-env-p0h71p7l\overlay\Lib\site-packages\setuptools\build_meta.py", line 295, in _get_build_requires
        self.run_setup()
      File "C:\Users\Me\AppData\Local\Temp\pip-build-env-p0h71p7l\overlay\Lib\site-packages\setuptools\build_meta.py", line 480, in run_setup
        super(_BuildMetaLegacyBackend, self).run_setup(setup_script=setup_script)
      File "C:\Users\Me\AppData\Local\Temp\pip-build-env-p0h71p7l\overlay\Lib\site-packages\setuptools\build_meta.py", line 311, in run_setup
        exec(code, locals())
      File "<string>", line 24, in <module>
    AttributeError: module 'enum' has no attribute '__version__'
    [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1

内容的提问来源于stack exchange，提问作者Ubuuser23