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Hello, I am having an issue while calling
multiprocessing.Process
with latest IPython version on python 3.6. This bug does not happen with 2.7.14, and does not seem to be needed to be backported to 5.X. I don’t know about 6.XSpecs: Python 3.6.0, Windows 10 x64
I'm calling a code looking similar to
Stack trace
Explanation
Multiprocessing fail as
DummyMod
does not contain a__spec__
field.According to Python's source code, the code will handle a
None
value properly: https://github.com/python/cpython/blob/bd73e72b4a9f019be514954b1d40e64dc3a5e81c/Lib/multiprocessing/spawn.py#L169-L183This patch fixes the issue on my end.