Rectangle class
Implement a Rectangle class with properties, methods, and special methods for basic geometry and comparison.
Complex Number Class
Implement a Complex class supporting addition, subtraction, multiplication, division, equality, and string formatting.
String Representation Mixin
Implement a mixin class that provides generic __repr__ and __str__ based on instance attributes.
Playing card class
Design a PlayingCard class with suit, rank, color, and equality/comparison magic methods.
Async Context Manager Lifecycle
Build an async context manager class that tracks acquisition and ensures cleanup.
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Guide: free Python coding challenges
Practice Python by solving problems
PythonSkillset challenges are hands-on coding exercises from beginner to advanced. Open a challenge, read the problem, write Python in the split-pane editor, and run tests with Pyodide — no install required.
How to use the arena
- Pick a category — basics, algorithms, strings, and more
- Open a challenge, read the statement, and edit the starter code
- Run tests, fix failures, then try a related quiz or tutorial lesson
Challenges vs tutorials and quizzes
Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.