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https://github.com/python/cpython
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Tip revision: eb96c376994cb7c6c2e8a4967782d1c0e2a96135 authored by Ned Deily on 02 May 2018, 07:41:45 UTC
3.7.0b4
Tip revision: eb96c37
mp_preload.py
import multiprocessing

multiprocessing.Lock()


def f():
    print("ok")


if __name__ == "__main__":
    ctx = multiprocessing.get_context("forkserver")
    modname = "test.mp_preload"
    # Make sure it's importable
    __import__(modname)
    ctx.set_forkserver_preload([modname])
    proc = ctx.Process(target=f)
    proc.start()
    proc.join()
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