Fix download.py to work without global variables #5
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Since Python 3.8 on the macOS version, the multiprocessing module does not use spawn anymore so global variables become unavailable (see: https://bugs.python.org/issue39931). With this change redownloading_warning becomes unavailable.
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Since Python 3.8 on the macOS version the multiprocessing module does not use spawn anymore so global variables become unavailable in Pools (see: https://bugs.python.org/issue39931). I simply pass all necessary variables as arguments instead. With this change redownloading_warning becomes unavailable.
Fixes #4