What is Python multiprocessing and how can I use it?

What is Python multiprocessing and how can I use it?

Python multiprocessing is a module that allows you to create multiple processes, enabling parallel execution of tasks.

Can you give me an example of how to implement multiprocessing in Python?

Sure! You can use the Process class from the multiprocessing module. Here's a simple example:

from multiprocessing import Process

def print_square(num):
    print(f'Square: {num * num}')

if __name__ == '__main__':
    processes = []
    for i in range(5):
        p = Process(target=print_square, args=(i,))
        processes.append(p)
        p.start()

    for p in processes:
        p.join()

What are the advantages of using multiprocessing over threading?

Multiprocessing can take advantage of multiple CPU cores, while threading is limited by Python's Global Interpreter Lock (GIL). This makes multiprocessing better for CPU-bound tasks.

Are there any downsides to using multiprocessing?

Yes, multiprocessing can have higher overhead due to process creation and inter-process communication, making it less efficient for I/O-bound tasks.