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

You can use a list comprehension to construct the new list with the cleaned up files names. \d is the regex to match a single character and $ only matches at the end of the string.

file_lst_trimmed = [re.sub(r'\d\.fa$', '', file) for file in file_lst]

The results:

>>> file_lst_trimmed 
['cats', 'cats', 'dog', 'dog']