Author asvetlov
Recipients aeros, asvetlov, yselivanov
Date 2020-11-18.19:34:20
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Message-id <1605728061.49.0.479855543389.issue42392@roundup.psfhosted.org>
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Despite the fact that asyncio.get_running_loop() never returns None but raises RuntimeError (and maybe other tiny cleanups), 
I can live with the proposal.

It doesn't make a system worse at least and backward compatible.
We can return to the idea of raising a warning from the constructor later, on collecting more feedback.

P.S.
There is a subtle non-deterministic behavior in the proposal: if the lock is accessed from a concurrent thread, the exception about wrong usage will be raised later at an arbitrary code point.
This is a well-known problem of the lazy initialization pattern and maybe we should do nothing with it. The programming is a compromise always.
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Date User Action Args
2020-11-18 19:34:21asvetlovsetrecipients: + asvetlov, yselivanov, aeros
2020-11-18 19:34:21asvetlovsetmessageid: <1605728061.49.0.479855543389.issue42392@roundup.psfhosted.org>
2020-11-18 19:34:21asvetlovlinkissue42392 messages
2020-11-18 19:34:20asvetlovcreate