The RLock (Reentrant Lock) in the multiprocessing.Manager module is a synchronization primitive that can be used to control access to a shared resource in a multi-process environment. It is similar to a regular Lock, but with the added feature of re-entrancy, meaning that a process can acquire the lock multiple times without deadlocking itself. This allows for more fine-grained control over access to the shared resource, preventing potential race conditions and ensuring thread-safety. The RLock object can be created using the Manager class provided by the multiprocessing module, allowing it to be shared among multiple processes.
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