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We are going to learn a new loop, the while loop! We continue the loop as long as the statement is true. So don't forget to change the value in the loop.

In the example code, we continue until a correct answer has been given. If the correct answer is never given, the loop never ends!

answer = 0
while answer != 25
    answer = ask 'What is 5 times 5?'
print 'A correct answer has been given'

Using the while loop can make your stories more interesting. For example, you can use while game == 'on' so you can play until the game is over. Or you can use while sword == 'lost' so the player can't continue the game until they have found something.

Exercise

The example code shows you how to use the while loop in a story. Now think of your own scenario in which the player has to find something before they can continue.

keys = 'lost'
print('You are standing in your garden and you have lost your keys.')
print('Where do you want to look for them?')
print('You can choose: tree, flowerbed, rock, postbox')
while keys == 'lost':
    location = input('Where do you want to look?')
    if location == 'flowerbed':
        print('Here they are!')
        keys = 'found'
    else:
        print('Nope they are not at the ', location)
print('Now you can enter the house!')

Exercise

In this level you can create a little game in which you'll have to throw 6 as fast as possible. We have started the code, it's up to you to get the game to work!

Firstly, add a while loop that checks if 6 has been thrown or not. As long as you haven't thrown 6 already, throw the dice on a random number. Print what the player has thrown. Add a try to the amount of tries Wait a second before you throw again, or - in case you've thrown a 6 - before the game ends.

options = [1, 2, 3, 4, 5, 6]
print 'Throw 6 as fast as you can!'
thrown = 0
tries = 0
_
_
_
_
_
print('Yes! You have thrown 6 in ', tries, ' tries.')

Exercise

Play until you beat the computer! But first, finish the example code...

won = 'no'
options = 'rock', 'paper', 'scissors'
while won == 'no'
    your_choice = ask 'What do you choose?'
    computer_choice = options at random
    print 'you chose ' your_choice
    print 'the computer chose ' computer_choice
    if computer_choice == your_choice
        print 'Tie!'
    if computer_choice == 'rock' and your_choice == 'scissors'
        print 'You lose!'
    if computer_choice == 'rock' and your_choice == 'paper'
        print 'You win!'
        won = 'yes'
_

Warning This adventure can become extremely annoying! We can also use the while command to repeat a song forever.

Exercise

Finish the never-ending song.

define song
    play _

yes_or_no = ask 'Do you want to hear my never-ending song?'
while yes_or_no = 'yes'
    song()
    print '🥳'

Exercise

Recreate the drawings with the turtle!

Spiral

distance = 5
while distance < 200
    distance = distance + 5
     _

Fan

define draw_a_square(side)
_

i = 100
while i > 1
    _(i)
    _
    i = i - 3

Star

Star A star is usually drawn using 144-degree-turns. If you change this slightly to 143 degrees for example and repeat the pattern multiple times with a while loop you can make this figure.

You can add the while loop to the calculator game you've learned to make in a previous level. This makes sure the player can't continue to the next question if they answer incorrectly.

Exercise

Add the while loop in the function, ask the player what number_1 times number_2 is and print their answer. Then call the function.

define new_question():
    numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
    number_1 = numbers[random]
    number_2 = numbers[random]
    correct = number_1 * number_2
    answer = 0
    _
    _
    _
    print('Well done!')

print('Give 10 correct answers to win!')
for i in range 1 to 10:
    _
print('You win!')

With the while you can make sure your customers can keep adding orders until they are done.

Exercise

Correctly add the while command to this code.

print 'Welcome at McHedy'
more = 'yes'
_
    order = ask 'What would you like to order?'
    print order
    more = ask 'Would you like to order anything else?'
print 'Thank you!'

In this level you can program the game 'Guess my number'

Exercise

Fill in the correct symbols on the blanks to get the game to work.

print('Guess my number')
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
number = numbers[random]
game = 'on'
for i in range (1, 10):
    if game == 'on':
        guess = input('Which number do you think it is?')
        if guess _ number
            print ('Lower!')
        if guess _ number
            print ('Higher!')
        if guess _ number
            print '(You win!')
            game = 'over'

Exercise

Debug this code. Good luck!

Warning! This code needs to be debugged!

define (food_order)
    toppings = input('pepperoni, tuna, veggie or cheese?')
    size = input 'big, medium or small?'
    number_of_pizza = ask('How many these pizzas would you like?')

    print('YOU ORDERED')
    print(number_of_pizzas ' size  ' topping ' pizza')

def drink_order:
    drink = input'water, coke, icetea, lemonade or coffee?'
    number_of_drinks = input('How many of these drinks would you like?')

    print ()('YOU ORDERED')
    print (number_of_drinks ' ' drink)

'Welcome to Hedy pizza'
more_food = input 'Would you like to order a pizza?'
while more_food = 'yes':
    return more_food
    more_food == input('Would you like to order a pizza?')
more_drinks = input('Would you like to order some drinks?')
while more_drinks == 'yes':
    call drink_order
    more_drinks == input('Would you like to order more drinks?')

print 'Thanks for ordering!'

Latest update: 2026 Feb 25(334cb5)

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