STINNER Victor <vstin...@python.org> added the comment:

> if we don't load _warnings module as soon as possible, what possible risks 
> will be raise?

There are different risks:

* Worst case: using the _warnings module state before it's initialized may lead 
to crash.
* Best case: some warnings are not emitted.

Anyway, the initial issue should now be fixed by my commit.

----------
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39796>
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