如何找到给定模块的python包元数据信息 [英] How do you find python package metadata information given a module

问题描述

在给定模块名称的情况下，我正在尝试检索python包的元数据信息.

I'm trying to retrieve metadata information for a python package given the name of the module.

我可以使用importlib-metadata检索信息，但是在某些情况下，顶级模块名称与软件包名称不同.

I can use importlib-metadata to retrieve the information, but in some cases the top-level module name is not the same as the package name.

示例:

>>> importlib_metadata.metadata('zmq')['License']
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "c:\Users\xxxxx\AppData\Local\Programs\Python\Python37\Lib\site-packages\importlib_metadata\__init__.py", line 499, in metadata
    return Distribution.from_name(distribution_name).metadata
  File "c:\Users\xxxxx\AppData\Local\Programs\Python\Python37\Lib\site-packages\importlib_metadata\__init__.py", line 187, in from_name
    raise PackageNotFoundError(name)
importlib_metadata.PackageNotFoundError: zmq


>>> importlib_metadata.metadata('pyzmq')['License']
'LGPL+BSD'

推荐答案

我相信类似以下内容的方法应该起作用:

I believe something like the following should work:

#!/usr/bin/env python3

import importlib.util
import pathlib

import importlib_metadata

def get_distribution(file_name):
    result = None
    for distribution in importlib_metadata.distributions():
        try:
            relative = (
                pathlib.Path(file_name)
                .relative_to(distribution.locate_file(''))
            )
        except ValueError:
            pass
        else:
            if relative in distribution.files:
                result = distribution
    return result

def alpha():
    file_name = importlib.util.find_spec('easy_install').origin
    distribution = get_distribution(file_name)
    print("alpha", distribution.metadata['Name'])

def bravo():
    file_name = importlib_metadata.__file__
    distribution = get_distribution(file_name)
    print("bravo", distribution.metadata['Name'])

if __name__ == '__main__':
    alpha()
    bravo()

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