What are some examples of using concurrent futures in Python?

Can you explain what concurrent futures are in Python?

Sure! Concurrent futures is a module in Python that provides a high-level interface for asynchronously executing callables using threads or processes.

Can you give me an example of how to use it?

Absolutely! Here's a simple example using ThreadPoolExecutor:

from concurrent.futures import ThreadPoolExecutor

def task(n):
    return n * n

with ThreadPoolExecutor(max_workers=5) as executor:
    results = list(executor.map(task, range(10)))
print(results)

What does this code do?

This code creates a thread pool with 5 workers and maps the task function to the numbers 0 through 9, returning their squares.

Are there any other ways to use concurrent futures?

Yes, you can also use ProcessPoolExecutor for CPU-bound tasks, which utilizes multiple processes instead of threads.