[issue44675] Cross-platform issues with private methods and multiprocessing

Andrei Kulakov added the comment: If we are not going to fix this issue in pickling at this time, I think it makes sense to raise an error with a good, clear explanation in multiprocessing.Process(target=self.__method), which is affected by this and caused some confusion in this issue: #4467

[issue44675] Cross-platform issues with private methods and multiprocessing

Andrei Kulakov added the comment: More details and a suggested fix here: #37852 . -- ___ Python tracker ___ ___ Python-bugs-list ma

[issue44675] Cross-platform issues with private methods and multiprocessing

Andrei Kulakov added the comment: The issue seems to be that there was a change between 3.7.7 and 3.8.6, - multiprocessing started using pickle dump / load which cannot handle double underscore methods. See #33007 for a reproducer with pickle. I'm using MacOS and this multiprocessing exampl

[issue44675] Cross-platform issues with private methods and multiprocessing

New submission from Jeremy : While writing a program using the multiprocessing library I stumbled upon what appears to be a bug with how different platforms deal with private methods. When a class has a private method which is the target for a multiprocessing process, this name is correctly r