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Python Coding
Challenges

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925 challenges 556 easy 323 medium 46 hard

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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

Python Basics easy

Volume of Cube

Write a Python function that returns the volume of a cube given its side length.

arithmetic return function

Python Basics easy

Modulo Remainder

Implement a function that returns the remainder of a divided by b without using the modulo operator.

modulo arithmetic integers

Python Basics easy

Print Pyramid Pattern

Implement a function that returns a centered asterisk pyramid as a list of strings.

loops strings pattern-printing

Python Basics easy

Last Digit Extractor

Write a function that returns the last digit of a non-negative integer using the modulo operator.

integers modulo arithmetic

Python Basics easy

Count word occurrences

Write a function that takes a sentence and returns a dictionary of word counts.

strings counting dictionaries

Python Basics easy

Linear Search Implementation

Implement a linear search function that returns the index of the first occurrence of a target in a list, or -1 if not found.

linear-search list index

Python Basics easy

Count Leading Zeros

Write a function that returns the number of leading zeros in a list of integers.

lists iteration counting

Python Basics easy

Copy deep vs shallow

Predict and write a function that returns a copied list and inspect whether nested modification affects the original.

copy nested mutation

Python Basics easy

Limit and Offset Query

Write a function that returns a page from a dataset given limit and offset.

pagination list slicing

Python Basics easy

Array mean and std

Implement the function array_stats that returns the mean and population standard deviation of a list of numbers.

statistics mean std

Python Basics easy

Cumulative Sum Vectorized

Implement a function that returns the cumulative sum of a list of numbers.

lists cumulative sum

Python Basics easy

Invariant checker

Implement check_invariant(a, b, c) that returns True when a equals b plus c and False otherwise, matching the given examples.

functions conditionals validation

Python Basics easy

Argmax along axis

Write a function that returns index positions of the maximum values along rows or columns of a 2D list.

lists max index

Showing 25–37 of 37 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.