Practice Arena

Python Coding
Challenges

Write real Python in the browser. Instant feedback. From beginner to expert.

819 challenges 506 easy 280 medium 33 hard

All Easy Medium Hard

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

Python Basics easy

Insert New Row

Implement a function that inserts a new row into a 2D list at a specified index.

lists insert rows

Python Basics easy

Broadcast Add Scalar

Add a scalar to every number in a 2D list and return a new 2D list without modifying the original.

nested-loops addition lists

Python Basics easy

Fancy Index Select

Given a 2D matrix and a list of row indices, select those rows in order and return them as a new 2D list.

indexing lists matrix

Python Basics easy

Reshape array dimensions

Implement a function that reshapes a 1D list into a 2D list with given dimensions.

reshape matrix lists

Showing 4 challenges · Python Basics

Python Basics — Python coding challenges

What you will find here

This page lists python basics challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.

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.