What are some examples of using multiprocessing in Python?

What are some examples of using multiprocessing in Python?

Multiprocessing in Python allows you to run multiple processes simultaneously. Here are a few examples:

1. Basic Example: Using multiprocessing.Process to run a function in a separate process.
2. Pool of Workers: Using multiprocessing.Pool to manage a pool of worker processes for parallel execution.
3. Queue for Communication: Using multiprocessing.Queue to share data between processes. Would you like to see code examples for any of these?

Yes, can you show me a basic example?

Sure! Here's a basic example of using multiprocessing.Process:

import multiprocessing

def worker(num):
    print(f'Worker: {num}')

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

    for p in processes:
        p.join()

This code creates 5 worker processes that print their respective numbers. Would you like to know more about how it works?

Yes, how does the join() method work?

The join() method is used to wait for a process to finish its execution. When you call p.join(), the main program will pause until the process p completes. This ensures that all processes have finished before the program continues or exits. It's important for synchronizing the completion of processes. Do you have any other questions about multiprocessing?