Reeyarn Li <reey...@gmail.com> added the comment:
There is already a solution: https://stackoverflow.com/questions/41385708/multiprocessing-example-giving-attributeerror When putting the function into a separate file and import it in the main file, there is no error at all. ##File: defs.py def f(x): return x*x ##File: run.py from multiprocessing import Pool import defs if __name__ == '__main__': with Pool(5) as p: print(p.map(defs.f, [1, 2, 3])) ---------- resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue42708> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com