Is there a python function to replace absolute urls with relative url paths?

Question

I'm crawling a website and saving selected pages for offline browsing. Of course the links between pages are broken so I'd like to do something about that. Is there a somewhat simple way in python to relativize url paths like this without reinventing the wheel:

/folder1/folder2/somepage.html    becomes---->   folder2/somepage.html
/folder1/otherpage.html           becomes---->   ../otherpage.html

I understand the function would need two url paths to determine the relative path as the linked resource's path is relative to the page it appears on.

Answer 1

the newer pathlib (only briefly mentioned in the duplicate) also works with urls:

from pathlib import Path

abs_p = Path('https://docs.python.org/3/library/pathlib.html')
rel_p = abs_p.relative_to('https://docs.python.org/3/')
print(rel_p)  # library/pathlib.html