[issue42395] aclosing was not added to __all__ in contextlib

[Tom Gringauz]

New submission from Tom Gringauz <tomgrin10 at gmail.com>:

Related to this PR https://github.com/python/cpython/pull/21545

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components: Library (Lib)
messages: 381296
nosy: tomgrin10
priority: normal
severity: normal
status: open
title: aclosing was not added to __all__ in contextlib

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