[New-bugs-announce] [issue32754] feature request: asyncio.gather/wait cancel children on first exception

[Alexander Mohr]

New submission from Alexander Mohr <thehesiod at gmail.com>:

currently gather/wait allow you to return on the first exception and leave the children executing.

A very common use case that I have is of launching multiple tasks, and if any of them fail, then all should fail..otherwise the other tasks would continue running w/o anyone listening for the results.  To accomplish this I wrote a method like the following: https://gist.github.com/thehesiod/524a1f005d0f3fb61a8952f272d8709e.  I think it would be useful to many others as on optional perhaps a parameter to each of these methods.

What do you guys think?

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components: asyncio
messages: 311527
nosy: asvetlov, thehesiod, yselivanov
priority: normal
severity: normal
status: open
title: feature request: asyncio.gather/wait cancel children on first exception
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32754>
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