runpy accepts Path like objects but open_code seems to only accept strings, so calling open_code with Path object throws TypeError.
I think runpy should call str() on all path passed to open_code.
The relevant line is 232 in runpy.py in function _get_code_from_file.

Is there documentation in runpy where it's stated that path objects are accepted for the function? If not this seems to be an enhancement.

Can't see anything about this in the docs, I just noticed that it breaks shiv after upgrade.

Not a direct solution, but I have offered that io.open_code should be changed to support pathlike objects: https://bugs.python.org/issue39691

open_code is correct according to PEP 578, so the fix here is for runpy to ensure the path is absolute and pass it through os.fsdecode() before calling io.open_code().

Hey there, the PR was approved a week ago, is there a reason it is not merged yet?

New changeset 0911ea5c172264eaefa3efe4a1788159c160920d by Maor Kleinberger in branch 'master':
bpo-39517: Allow runpy.run_path() to accept path-like objects (GH-18699)
https://github.com/python/cpython/commit/0911ea5c172264eaefa3efe4a1788159c160920d

Nope, just that I apparently forgot to merge (or forgot to come back after CI had finished).

Thanks for the reminder!

New changeset 0687bdf5def13ddca09e854113c0eac0772afea0 by Miss Islington (bot) in branch '3.8':
bpo-39517: Allow runpy.run_path() to accept path-like objects (GH-18699)
https://github.com/python/cpython/commit/0687bdf5def13ddca09e854113c0eac0772afea0

Great, thank you!