Extracting extension from filename in Python

2018-05-31 21:32:02

有没有从文件名中提取扩展名的函数？

Yes. Use os.path.splitext :

>>> import os
>>> filename, file_extension = os.path.splitext('/path/to/somefile.ext')
>>> filename
'/path/to/somefile'
>>> file_extension
'.ext'

import os.path
extension = os.path.splitext(filename)[1]

New in version 3.4.

import pathlib

print(pathlib.Path('yourPathGoesHere').suffix)

I'm surprised no one has mentioned pathlib yet, pathlib IS awesome!

If you need all the suffixes (eg if you have a .tar.gz ), .suffixes will return a list of them!

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