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Returns logger used by multiprocessing
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Turn on logging and add a handler which prints to stderr
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Class which supports object finalization using weakrefs
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Run the callback unless it has already been called or cancelled
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Cancel finalization of the object
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Return whether this finalizer is still waiting to invoke callback
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Run all finalizers whose exit priority is not None and at least minpriority
Finalizers with highest priority are called first; finalizers with
the same priority will be called in reverse order of creation.
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Returns true if the process is shutting down
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