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Demo Lesson: Using Functions

Learn how to define and use functions in Python — the building blocks of clean, reusable code. This lesson covers function definitions, parameters, return values, and scope.

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What You'll Learn in This Lesson

Defining functions with def

Parameters and arguments

Return values

Default and keyword arguments

Variable scope

Practical examples

Sample Course Curriculum

This lesson is part of a full Python course. Here's what a typical course structure looks like.

Using Functions

Now Playing

18 min

Function Practice

25 min

Importing Modules

10 min

Functions Assignment

45 min

Module Quiz

8 min

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