Description

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Beginner · 10 min

Making decisions

Choose between two actions with if and else.

Run code when a condition is true

An if statement checks a condition. End its first line with a colon and indent the code below it. Use four spaces consistently for this lesson.

temperature = 12
if temperature < 15:
    print("Take a jacket")

Output

Take a jacket

Choose the other action

An else block runs when the if condition is false. Keep else aligned with if. Only one of these two blocks runs.

stock = 0
if stock > 0:
    print("Available")
else:
    print("Sold out")

Output

Sold out

Making decisions

  1. Mark the block selected by each condition.
  2. Check the colons and indentation.

Try it yourself

Code runs on this device. When you are signed in, drafts sync to your account.

Choose a delivery message

Keep total as 25. If it is at least 20, store Free delivery in message; otherwise store Delivery fee. Display message.

Practice