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Concurrency & performance

asyncio, threading, multiprocessing, and profiling-friendly performance patterns.

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Concurrency & performance easy

How to Wait for the First Future to Complete in Python

Use concurrent.futures.wait with FIRST_COMPLETED to pause until any task finishes and inspect the remaining pending futures.

concurrent.futures wait threading
Python 
import concurrent.futures
import time


def task(name, delay):
    time.sleep(delay)
    return f"{name} done"


if __name__ == "__main__":
    with concurrent.futures.ThreadPoolExecutor(max_workers=3) as executor:
        futures = [
            executor.submit(task, "task1", 2),
            executor.submit(task, "ta…
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