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Concurrency & performance

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

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Concurrency & performance easy

How to Use threading.Lock to Synchronize a Counter in Python

Safely increment a shared counter across multiple threads using threading.Lock as a mutex to prevent race conditions.

threading lock mutex
Python 
import threading

counter = 0
lock = threading.Lock()

def increment():
    global counter
    for _ in range(100000):
        with lock:
            counter += 1

threads = [threading.Thread(target=increment) for _ in range(5)]
for t in threads:
    t.start()
for t in threads:
    t.join()

print(f"Final counter valu…
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