[docs] [issue37346] Documentation of os not using OSError subclasses

[Tim Hoffmann]

Change by Tim Hoffmann <tim.hoffmann at posteo.de>:


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keywords: +patch
pull_requests: +14090
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/14262

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<https://bugs.python.org/issue37346>
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