[New-bugs-announce] [issue32445] Skip creating redundant wrapper functions in ExitStack.callback

[Nick Coghlan]

New submission from Nick Coghlan <ncoghlan at gmail.com>:

While discussing https://bugs.python.org/issue32145, I noticed that ExitStack.callback *always* adds a wrapper function, even when the `args` and `kwds` parameters are both empty.

For plain callbacks that aren't receiving any extra arguments, it would be better to skip adding the redundant wrapper function.

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messages: 309171
nosy: barry, ncoghlan
priority: normal
severity: normal
stage: needs patch
status: open
title: Skip creating redundant wrapper functions in ExitStack.callback
type: performance
versions: Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32445>
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