Python - 12

Python - 12: While Loops

while loops repeat code as long as a condition remains true.

Your challenge: Count from 1 to 5 with a while loop, then create another loop that counts down.

Check the condition

This loop keeps running while count <= 5 is true.

Once count becomes 6, the condition is false and the loop stops.

Update the variable

Inside the loop, count = count + 1 increases the value each time.

Without that update, the condition could stay true forever.

Count down

You can also decrease a value: lives = lives - 1

Try it: Change the first loop so it counts from 1 to 10.

Good Python habit: Before running a while loop, make sure something inside the loop will eventually make its condition false.

count = 1

while count <= 5:
    print(count)
    count = count + 1

print("Loop finished!")

lives = 3

while lives > 0:
    print("Lives left:")
    print(lives)

    lives = lives - 1

print("Game Over!")