Variables and Types

Names bound to values with defined operations.

Do this: Read the concept below, then try the quiz or activity.

Lesson 2 of 20

Concept

A variable stores a value. Types (number, string, boolean, etc.) determine valid operations and memory representation. Prefer clear names and minimal scope.

Try it

Create a variable for item price and tax rate; compute total and print it.

Type Basics

1 / 3

Number

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Quantities for arithmetic operations

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Code Tracer

Step through and watch price, tax_rate, and total.

Step through the code and watch the variables change.

1. price = 10
2. tax_rate = 0.08
3. total = price * (1 + tax_rate)
4. print(total)

Variables

Complete & Continue →