Lesson 15 of 20 · Variables

Variables — Part 15

Store and use values: score, name, count.

What you'll learn

You will learn that variables store values like labeled boxes, and you can read and update them.

Words to know

Variable: A named place to store a value (e.g. score). You can read it and change it.
Value: A piece of data, like a number or text. Variables hold values.
Assign: To give a variable a value using = (e.g. score = 0).

Your turn

📋 Show the steps

Try it: run the code, then change it

1A variable is like a labeled box. Here, 'score' is the label and 0 is what's inside. score = 0 means 'put 0 in the box called score'.
2print('Score:', score) looks inside the box and shows what's there — it would display 'Score: 0'.
3Then score = score + 1 takes the current value (0), adds 1, and puts the result (1) back in the box. Now score holds 1!
4Variables let programs remember and update information — like keeping score in a game, tracking lives, or storing a player's name.

Auto-run is on: change the code and the result updates by itself.

Auto-run

Output

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Check your understanding · 1 of 5

Which assigns the value 7 to x?

Check your understanding · 2 of 5

name = 'Alex' What type of value is stored?

Check your understanding · 3 of 5

What is a variable?

Check your understanding · 4 of 5

x = 10 print(x) What prints?

Check your understanding · 5 of 5

score = 0 score = score + 5 What is score now?

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