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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 9eb3d5463976068900e94b860ced7e035885835c authored by Steve Dower on 21 August 2019, 22:52:42 UTC, committed by GitHub on 21 August 2019, 22:52:42 UTC 
bpo-37834: Normalise handling of reparse points on Windows (GH-15370)
 
bpo-37834: Normalise handling of reparse points on Windows
* ntpath.realpath() and nt.stat() will traverse all supported reparse points (previously was mixed)
* nt.lstat() will let the OS traverse reparse points that are not name surrogates (previously would not traverse any reparse point)
* nt.[l]stat() will only set S_IFLNK for symlinks (previous behaviour)
* nt.readlink() will read destinations for symlinks and junction points only

bpo-1311: os.path.exists('nul') now returns True on Windows
* nt.stat('nul').st_mode is now S_IFCHR (previously was an error)
1 parent c30c869
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Tip revision: 9eb3d5463976068900e94b860ced7e035885835c authored by Steve Dower on 21 August 2019, 22:52:42 UTC
bpo-37834: Normalise handling of reparse points on Windows (GH-15370)
Tip revision: 9eb3d54
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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