[issue20645] 3.4 cherry-pick: 1166b3321012 Revert changes of issue #19466 (clear thread state earlier)

[STINNER Victor]

New submission from STINNER Victor:

I modified Python shutdown process in issue #19466 to clear Python thread state earlier, but it introduced a regression: #20526. So I simply reverted my changes until the real bugs are fixed.

Changeset of the revert: 1166b3321012.

----------
assignee: larry
messages: 211373
nosy: haypo, larry
priority: release blocker
severity: normal
status: open
title: 3.4 cherry-pick: 1166b3321012 Revert changes of issue #19466 (clear thread state earlier)
versions: Python 3.4

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20645>
_______________________________________