How can I implement parallel processing in my project?

I'm working on a data processing project and I want to speed it up. How can I implement parallel processing?

You can implement parallel processing by using libraries like multiprocessing in Python or threading. What language are you using?

I'm using Python. Can you give me a simple example?

Sure! You can use the multiprocessing module. Here's a basic 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 calculate the square of numbers in parallel.

That looks great! How do I handle shared data between processes?

You can use Value or Array from the multiprocessing module for shared data, or use a Manager for more complex data structures.