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If a software project supports a version of Python that multiprocessing has been backported to, is there any reason to use threading.Lock over multiprocessing.Lock? Would a multiprocessing lock not be thread safe as well?
For that matter, is there a reason to use any synchronization primitives from threading that are also in multiprocessing?
The threading module’s synchronization primitive are lighter and faster than multiprocessing, due to the lack of dealing with shared semaphores, etc. If you are using threads; use threading’s locks. Processes should use multiprocessing’s locks.