[issue22005] datetime.__setstate__ fails decoding python2 pickle

[Serhiy Storchaka]

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

NumPy starves from the same issue. In NumPy this problem was solved by requiring encoding='latin1' passed to unpickler. It makes sense to use the same approach for datetime classes.

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versions: +Python 3.7, Python 3.8 -Python 2.7, Python 3.4, Python 3.5

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