What is parallelism in Python and how can I use it?

What is parallelism in Python and how can I use it?

Parallelism in Python refers to the ability to execute multiple processes simultaneously, improving performance for CPU-bound tasks.

Can you explain the difference between parallelism and concurrency?

Sure! Concurrency is about dealing with many tasks at once, while parallelism is about doing many tasks at the same time.

What libraries can I use for parallelism in Python?

You can use libraries like multiprocessing, concurrent.futures, and joblib for parallelism in Python.

Can you give me a simple example using the multiprocessing library?

Absolutely! Here's a simple example:

from multiprocessing import Pool

def square(n):
    return n * n

if __name__ == '__main__':
    with Pool(4) as p:
        print(p.map(square, [1, 2, 3, 4]))

This will compute the square of numbers in parallel.