Web Reference: As others have said multiprocessing can only transfer Python objects to worker processes which can be pickled. If you cannot reorganize your code as described by unutbu, you can use dill s extended pickling/unpickling capabilities for transferring data (especially code data) as I show below. Dec 5, 2024 · Explore effective methods to address the PicklingError in Python's multiprocessing, enhancing efficiency and flexibility in parallel processing. Jul 28, 2022 · To resolve this error, you can either avoid using nested functions or use the “multiprocessing.Manager” class to pass functions as strings. It is important to understand the limitations and requirements of pickling in multiprocessing to avoid encountering this error.
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