[issue39931] Global variables are not accessible from child processes (multiprocessing.Pool)

New submission from agmt : Attached test works correctly on linux (3.7, 3.8) and mac (only 3.7). Mac python3.8 falls with exception: multiprocessing.pool.RemoteTraceback: """ Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versio

[issue39931] Global variables are not accessible from child processes (multiprocessing.Pool)

agmt added the comment: Shared memory/pickle cannot send file descriptors -- ___ Python tracker <https://bugs.python.org/issue39931> ___ ___ Python-bugs-list m