[issue31841] Several methods of collections.UserString do not return instances of UserString or its subclasses

[Dmitry Kazakov]

Dmitry Kazakov <waultah+py at gmail.com> added the comment:

I added a PR.

FWIW, I still think it would make sense to change the return type of UserString.join, and maybe *split* and *partition methods (to return list/tuple of UserString objects) for the sake of consistency.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31841>
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