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
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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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