Is There a Thread Pool Equivalent to Python's Multiprocessing Pool?

Thread Pool Analogous to Multiprocessing Pool

In Python's multiprocessing module, the Pool class allows for efficient parallelization of tasks. For tasks that don't require the overhead of spawning processes, a similar option for threads would be desirable.

Existence of Thread-Based Pool in Multiprocessing

Contrary to the initial assumption, there is indeed a thread-based equivalent to the Pool class available within the multiprocessing module, albeit somewhat hidden and undocumented.

Importing the Thread Pool

To access the thread pool, utilize the following import statement:

from multiprocessing.pool import ThreadPool

Implementation Details

The thread pool is implemented using a dummy Process class that encapsulates a Python thread. This dummy Process class can be found in the multiprocessing.dummy module, which provides a thread-based emulation of the full multiprocessing interface.

By utilizing this dummy Process class, the ThreadPool interface offers compatibility with the multiprocessing.Pool class, allowing for seamless integration of thread-based parallelization within existing scripts.

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