Replace strings in a list (using re.sub)

Question

I am trying to replace parts of file extensions in a list of files. I would like to be able to loop through items (files), and remove the extensions. I don\'t know how to ap

Answer 1

No need for regex, use the standard library os and os.path.splittext for this.

Split the pathname path into a pair (root, ext) such that root + ext == path, and ext is empty or begins with a period and contains at most one period. Leading periods on the basename are ignored; splitext('.cshrc') returns ('.cshrc', '').

import os.path

l = ['hello.fa', 'images/hello.png']

[os.path.splitext(filename)[0] for filename in l]

Returns

['hello', 'images/hello']