while loops

Read first Task 23

while runs until the condition turns False — always change the variable inside.

Definition and example

while loops is the focus of this lesson. while runs until the condition turns False — always change the variable inside. The task asks you to apply that idea in a small example: What ends a while loop. Before you run the code, predict what should happen. Then Inspect the printed output and the values your program uses and compare it with your prediction. If the result differs, change one relevant line and run it again. Testing one change at a time makes the cause of a result easier to understand.

Python 1 automatic check Control flow and functions

Code editor Ctrl + Enter runs

# TASK while-loops-03: What ends a while loop?
# STEPS: Read the explanation. Change one relevant line at a time, then run the code and compare the result with the check on the right.
n = 0
# TODO: complete the code required by this task.
    n += 1
print(n)

Run your code to see the output and the checks.

Your result

Submit your code to see results

Write your code in the middle column and press Run code.

Checks on this task:

The program output must match “3”.

The task and step-by-step instructions are written as comments at the top of the editor. Change one relevant line, run it, and compare the result with these checks.

Incorrect attempts before answer: 0 / 3

Track progress

0 passed of 56 tasks

Pass every check or use one of your available skips to open the next task.

← Previous

Next task (pass every check first)

while loops

while loops

Why this works