Please help! I am very new at this. I have a string of url’s of which I am trying to remove the same part of each one. For example:

old urls

http://cdn4.abc//uploads/thumbnails/30/421/test-url-link-HuEB5k.jpg 
http://cdn4.abc//uploads/thumbnails/24/579/this-test-link-2-D3MnkU.jpg

Edited form remove end portion with text caption before .jpg

http://cdn4.abc//uploads/thumbnails/30/421/HuEB5k.jpg 
http://cdn4.abc//uploads/thumbnails/24/579/D3MnkU.jpg

Heres what I am trying but I cant get all the urls to adjust to the same format

import_re
domain_str = 'http://cdn4.abc//uploads/thumbnails/30/421/test-url-link-HuEB5k.jpg, http://cdn4.abc//uploads/thumbnails/24/579/test-url-link-2-D3MnkU.jpg, http://cdn4.abc//uploads/thumbnails/30/421/test-url-link-3-kJ65Vbe.jpg'
matches = re.findall('(https?://w*.w*/?)',domain_str)
altered_domains = [re.sub("test-url-link-", domain_str)]
print(altered_domains)