[issue42395] aclosing was not added to __all__ in contextlib

[Tom Gringauz]

Change by Tom Gringauz <tomgrin10 at gmail.com>:


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keywords: +patch
pull_requests: +22249
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/23356

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42395>
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