[issue42403] Cleanup importlib code

[STINNER Victor]

Change by STINNER Victor <vstinner at python.org>:


----------
keywords: +patch
pull_requests: +22287
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/23395

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42403>
_______________________________________