[issue33088] Cannot pass a SyncManager proxy to a multiprocessing subprocess on Windows

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[issue33088] Cannot pass a SyncManager proxy to a multiprocessing subprocess on Windows

New submission from Jeff DuMonthier : The following simple example code creates a started SyncManager and passes it as an argument to a subprocess started with multiprocessing.Process(). It works on Linux and Mac OS but fails on Windows. import multiprocessing as mp def subProcFn(m1): pa