[issue38008] ContextManager and AsyncContextManager protocols can't be subclassed

[Ivan Levkivskyi]

Change by Ivan Levkivskyi <levkivskyi at gmail.com>:


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components: +Library (Lib)
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions:  -Python 2.7, Python 3.5, Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38008>
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