[issue30064] BaseSelectorEventLoop.sock_{recv, sendall}() don't remove their callbacks when canceled

[Joongi Kim]

Joongi Kim <me at daybreaker.info> added the comment:

I just encountered this issue when doing "sys.exit(1)" on a Click-based CLI program that internally uses asyncio event loop via wrapped via a context manager, on Python 3.8.2.

Using uvloop or adding "time.sleep(0.1)" before "sys.exit(1)" removes the error.

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nosy: +achimnol

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue30064>
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