FileCookieJar and it's subclasses don't accept Paths and DirEntrys.
Minimal code to reproduce:

===

import pathlib
from http.cookiejar import FileCookieJar

saved_cookies = pathlib.Path('my_cookies.txt')
jar = FileCookieJar(saved_cookies)

===

Results in: "ValueError: filename must be string-like".
Workaround is to convert Path explicitly or call load() which doesn't check for type, but it would be nice to see all APIs in standard library consistent.

I also did quick and dirty patch which silently converts filename argument using os.fspath(). This way it won't break any existing code relying on FileCookieJar.filename being string.

This seems like a good change to me. GitHub PRs are accepted please see https://devguide.python.org/ . Since this is an enhancement it can only go as part of Python 3.8 if accepted.

@xtreak

sorry, but I have already worked on this issue :/

can I publish my PR?

in fact, I have published my PR because I have already the tests and I have another approach for this issue.

Oh sorry, I just thought that everybody has forgotten about this part of library. Nevermind my patch then, your work is certainly better, matrixise.

New changeset 4b219ce81ed04234648a4ce4f0cb0865818abb38 by Miss Islington (bot) (Stéphane Wirtel) in branch 'master':
bpo-36043: FileCookieJar supports os.PathLike (GH-11945)
https://github.com/python/cpython/commit/4b219ce81ed04234648a4ce4f0cb0865818abb38