Learn Python

Python is the most popular programming language for beginners, data science, AI, and automation. Our free interactive lessons take you from your first line of code to building real applications.

Write and run Python code in your browser
No downloads, no setup, no account required
Audio narration on every lesson
Compare with JavaScript, C++, and Java side-by-side
Covers variables, loops, functions, OOP, data structures, and algorithms

What you'll learn

1Variables, data types, and expressions
2Conditionals (if/elif/else) and loops (for/while)
3Functions, scope, and return values
4Lists, dictionaries, sets, and tuples
5Object-oriented programming with classes
6File I/O and error handling
7Sorting algorithms and Big-O notation
8Building real projects