[issue30374] Make win_add2path.py take effect without having to log off

[Eryk Sun]

Change by Eryk Sun <eryksun at gmail.com>:


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components:  -ctypes
versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue30374>
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