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Python Basics · Variables & Types · Lesson 4 of 36

Variables in Python

Concept

Variables in Python

Python variables do not need a declared type. Just assign a value with the equals sign.

This is called dynamic typing — the same variable name could hold a number at one point and a string later, though doing that on purpose usually makes code harder to follow.

By the end of this lesson
  • Explain the core idea behind Variables in Python.
  • Predict output before running a change.
  • Test one realistic and one unusual input.
  • Use the result to make the next decision.
How to study this page
  1. 1. Read one concept.
  2. 2. Change the example.
  3. 3. Run, compare, and explain.
  4. 4. Complete the challenge below.
Syntax
variable_name = value
ExampleRunnable
age = 20
name = "Alex"
print(name, age)
Try it Yourself »
Self-check before continuing

Without looking at the example, describe what changes when you modify one input in Variables in Python. Then reopen the editor and prove your explanation with a small test.

You are ready to continue when you can predict, test, and explain the result.

Your turn

Store your age and city in two variables and print them together.

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Console

Output will appear here...