ImportError: cannot import name main when running pip

本文解决了一个常见问题:在Windows环境下使用pip安装包时遇到ImportError,无法导入main模块。问题出现在pip版本10.0.0中,解决方法是通过Python直接调用pip,而不是直接调用/usr/bin/pip。

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https://stackoverflow.com/questions/28210269/importerror-cannot-import-name-main-when-running-pip-version-command-in-windo

Even though the original question seems to be from 2015, this 'bug' seems to affect users installing pip-10.0.0 as well.

The workaround is not to modify pip, however to change the way pip is called. Instead of calling /usr/bin/pip call pip via Python itself. For example, instead of the below:

pip install <package>

If from Python version 2 (or default Python binary is called python) do :

python -m pip install <package>

or if from Python version 3:

python3 -m pip install <package> 

RuntimeError: Failed to infer device type, please set the environment variable `VLLM_LOGGING_LEVEL=DEBUG` to turn on verbose logging to help debug the issue. 2025-07-25 13:35:45 INFO 07-24 22:35:45 [__init__.py:248] No platform detected, vLLM is running on UnspecifiedPlatform 2025-07-25 13:35:45 WARNING 07-24 22:35:45 [_custom_ops.py:20] Failed to import from vllm._C with ImportError('\x01: cannot open shared object file: No such file or directory') 2025-07-25 13:37:16 INFO 07-24 22:37:16 [__init__.py:248] No platform detected, vLLM is running on UnspecifiedPlatform 2025-07-25 13:37:16 WARNING 07-24 22:37:16 [_custom_ops.py:20] Failed to import from vllm._C with ImportError('\x01: cannot open shared object file: No such file or directory') 2025-07-25 13:37:19 Traceback (most recent call last): 2025-07-25 13:37:19 File "<frozen runpy>", line 198, in _run_module_as_main 2025-07-25 13:37:19 File "<frozen runpy>", line 88, in _run_code 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/entrypoints/openai/api_server.py", line 1491, in <module> 2025-07-25 13:37:19 parser = make_arg_parser(parser) 2025-07-25 13:37:19 ^^^^^^^^^^^^^^^^^^^^^^^ 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/entrypoints/openai/cli_args.py", line 266, in make_arg_parser 2025-07-25 13:37:19 parser = AsyncEngineArgs.add_cli_args(parser) 2025-07-25 13:37:19 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/engine/arg_utils.py", line 1717, in add_cli_args 2025-07-25 13:37:19 parser = EngineArgs.add_cli_args(parser) 2025-07-25 13:37:19 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/engine/arg_utils.py", line 906, in add_cli_args 2025-07-25 13:37:19 vllm_kwargs = get_kwargs(VllmConfig) 2025-07-25 13:37:19 ^^^^^^^^^^^^^^^^^^^^^^ 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/engine/arg_utils.py", line 285, in get_kwargs 2025-07-25 13:37:19 return copy.deepcopy(_compute_kwargs(cls)) 2025-07-25 13:37:19 ^^^^^^^^^^^^^^^^^^^^ 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/engine/arg_utils.py", line 189, in _compute_kwargs 2025-07-25 13:37:19 default = field.default_factory() 2025-07-25 13:37:19 ^^^^^^^^^^^^^^^^^^^^^^^ 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/pydantic/_internal/_dataclasses.py", line 123, in __init__ 2025-07-25 13:37:19 s.__pydantic_validator__.validate_python(ArgsKwargs(args, kwargs), self_instance=s) 2025-07-25 13:37:19 File "/usr/local/lib/python3.12/dist-packages/vllm/config.py", line 2413, in __post_init__ 2025-07-25 13:37:19 raise RuntimeError( 2025-07-25 13:37:19 RuntimeError: Failed to infer device type, please set the environment variable `VLLM_LOGGING_LEVEL=DEBUG` to turn on verbose logging to help debug the issue.
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07-26
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