Guido van Rossum <gu...@python.org> added the comment:

(Sam Bull)
> To expand on this point, I've been looking at solving the race conditions in 
> async-timeout. To see how such a race condition can end up with a task never 
> exiting, take a look at this example: 
> https://github.com/aio-libs/async-timeout/issues/229#issuecomment-908502523

This should be solved when using the cancel count -- the explicit cancel bumps 
the cancel count so the cancel scope (i.e. timeout()) will not raise 
TimeoutError.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue46771>
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