[docs] [issue20164] Undocumented KeyError from os.path.expanduser

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

The behavior was changed in f2f4555d8287ad217a1dba7bbd93103ad4daf3a8 as a part of issue10496.

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nosy: +serhiy.storchaka, vstinner
status: open -> pending

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue20164>
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