Strip known extension from filename

Question

I have a bunch of txt files. I want to strip out the .txt from the filename (which I am reading via os.walk).

How could I achieve this?

fileName.rstrip(".txt") seems to remove the letters .,t,x rather than removing the substring .txt

Both `filename.split('.')[0]` and `filename[:-4]` should do the trick. — jfaccioni, May 27 '19 at 18:47
Splitting at '.' would work if '.' is used only to separate the filename from extension. But that's not guaranteed. There could be multiple '.' — OC2PS, May 27 '19 at 19:18

score 1 · Answer 1 · answered May 27 '19 at 18:47

I would use rpartition (partition from right), and get the first elemnet from resulting tuple:

fileName.rpartition(".txt")[0]

rpartition is guaranteed to generate a 3-element tuple in the form:

(before, sep, after)

So, for filenames with .txt extension e.g. foobar.txt you would get:

('foobar', '.txt', '')

For files that does not end with .txt e.g. foobar:

('foobar', '', '')

so getting the first element would work in all cases.

score 1 · Accepted Answer · answered May 27 '19 at 18:48

1

I would recomment using the OS library.

name, ext = os.path.splitext(path)

answered May 27 '19 at 18:48

azb_

2 Answers2