[issue1596321] KeyError at exit after 'import threading' in other thread

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:


New changeset 94d19f606fa18a1c4d2faca1caf2f470a8ce6d46 by Victor Stinner in branch '3.9':
bpo-1596321: Fix threading._shutdown() for the main thread (GH-28549) (GH-28589)
https://github.com/python/cpython/commit/94d19f606fa18a1c4d2faca1caf2f470a8ce6d46


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