while True pattern in Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the while True loop do in Python?

It creates an infinite loop that keeps running until it is stopped by a break statement or an external interruption.

beginner

How do you stop a while True loop inside the loop?

You use the break statement to exit the loop when a certain condition is met.

intermediate

Why might you use a while True loop instead of a while loop with a condition?

Using while True lets you write the exit condition inside the loop body, which can make the code easier to read and handle complex exit conditions.

beginner

What is a common real-life example where while True is useful?

When waiting for user input repeatedly until they enter a valid response, like asking for a password until it is correct.

beginner

What happens if you forget to include a break in a while True loop?

The program will run forever, causing an infinite loop that can freeze or crash your program.

What keyword is used to exit a while True loop?

A break

B continue

C exit

D stop

The break statement immediately stops the loop and exits it.

What will happen if a while True loop has no break?

A The loop runs forever

B The loop runs once

C The loop never runs

D The loop runs twice

Without a break, the while True loop never stops on its own.

Which of these is a good use case for while True?

A None of the above

B Running a loop a fixed number of times

C Repeatedly asking user input until valid

D Looping through a list

while True is great for loops that run until a condition inside the loop is met, like user input validation.

What does the continue statement do inside a while True loop?

A Exits the loop

B Skips to the next loop iteration

C Pauses the loop

D Ends the program

continue skips the rest of the current loop and starts the next iteration.

Which of these is NOT true about while True loops?

A They always need a <code>break</code> to stop

B They run until stopped

C They can be used for infinite loops

D They automatically stop after 10 iterations

while True loops do not stop automatically after any number of iterations.

Explain how a while True loop works and how to safely stop it.

Think about what keeps the loop running and what stops it.

Describe a real-life scenario where using a while True loop is helpful.

Imagine asking someone for input until they give a correct answer.