[issue40907] cpython/lib/queue.py: put() does not acquire not_empty before notifying on it

[r n]

r n <raghav.newar at gmail.com> added the comment:

Thanks for the response.
However, if you see, every condition object has their own queue of waiters in self._waiters, that get notified during notify(), which are different for not_empty and not_full.
I see a hang very very rarely, like 1/25 times, in my program, which keeps, reading from and writing to a queue from multiple threads.

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nosy: +r n2

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