[issue43680] Deprecate undocumented io.OpenWrapper and _pyio.OpenWrapper

[STINNER Victor]

Change by STINNER Victor <vstinner at python.org>:


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
title: Remove undocumented io.OpenWrapper and _pyio.OpenWrapper -> Deprecate undocumented io.OpenWrapper and _pyio.OpenWrapper

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43680>
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