While Loops & break/continue

Why this matters

while powers retry logic, polling loops, and event listeners in real backends. Every requests retry helper, every websocket reader, every game loop is a while True with a smart break condition.

Common pitfalls

• Forgetting to update the loop variable: while i < 10: print(i) runs forever. Always mutate state inside the body.
• Using while True without a break. Ctrl+C is the only exit, and in production that means a hung worker.
• Confusing continue with break. continue skips to the next iteration; break exits the loop entirely.