Python coding challenges: "classes"

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All Python Basics Strings & Text Lists & Arrays Dicts & Sets Functions & Closures OOP & Classes Data Structures & Algorithms Advanced Python Iterators & Generators Decorators & Context Managers Error Handling & Exceptions Regular Expressions Math & Number Theory Bit Manipulation Dynamic Programming Trees & Binary Trees Graphs & Graph Algorithms Recursion & Backtracking Greedy Algorithms Binary Search Two Pointers & Sliding Window Stacks & Queues Heaps & Priority Queues Linked Lists Matrix & 2D Arrays Datetime & Time Calculations Data Formats & Parsing SQL & SQLite Numpy & Vectorized Computing Cryptography & Hashing

OOP & Classes easy

Rectangle class

Implement a Rectangle class with properties, methods, and special methods for basic geometry and comparison.

classes magic-methods geometry

+10 pts 12m

OOP & Classes easy

Abstract Base Class

Create an abstract Shape class and implement Rectangle and Circle subclasses with area and perimeter.

abc abstract oop

+10 pts 15m

Decorators & Context Managers easy

Context Manager Class

Implement a context manager class that measures execution time and sets duration, with None if an exception occurred.

context-manager classes timing

+8 pts 12m

Trees & Binary Trees easy

Binary Search Tree Class

Build a BinarySearchTree class and a sequence runner that executes a list of operations.

binary-search-tree classes traversal

+10 pts 15m

Showing 4 challenges · easy

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.

Python Coding Challenges