Delete multiple files matching a pattern

Question

I have made an online gallery using Python and Django. I've just started to add editing functionality, starting with a rotation. I use sorl.thumbnail to auto-generate thumbnails on demand.

When I edit the original file, I need to clean up all the thumbnails so new ones are generated. There are three or four of them per image (I have different ones for different occasions).

I could hard-code in the file-varients... But that's messy and if I change the way I do things, I'll need to revisit the code.

Ideally I'd like to do a regex-delete. In regex terms, all my originals are named like so:

^(?P<photo_id>\d+)\.jpg$ 

So I want to delete:

^(?P<photo_id>\d+)[^\d].*jpg$ 

(Where I replace photo_id with the ID I want to clean.)

Answer 1

Using the glob module:

import glob, os for f in glob.glob("P*.jpg"):     os.remove(f) 

Alternatively, using pathlib:

from pathlib import Path for p in Path(".").glob("P*.jpg"):     p.unlink() 

Answer 2

Try something like this:

import os, re  def purge(dir, pattern):     for f in os.listdir(dir):         if re.search(pattern, f):             os.remove(os.path.join(dir, f)) 

Then you would pass the directory containing the files and the pattern you wish to match.