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Python Coding
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467 challenges 330 easy 120 medium 17 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

Count down from n

Implement a function that returns a list from n down to 1.

loops range lists

Python Basics easy

Multiplication Table Row

Return the nth row of a multiplication table as a list of 1..n products.

loops lists multiplication

Python Basics easy

Last Occurrence of a Value

Implement a function that returns the last index of a given value in a list, or -1 if it's not present.

lists search indexing

Python Basics easy

Cycle a List Once

Implement a function that rotates a list right by one position.

lists rotation indexing

Python Basics easy

Boolean Mask Filter

Write a function that filters a list based on a boolean mask and returns the selected elements.

filter boolean lists

Python Basics easy

Replace negatives with zero

Implement a function that replaces all negative numbers in a list with zero.

lists loops conditionals

Python Basics easy

Average of a list

Write a function that computes the average of a list of numbers, handling empty lists by returning 0.

average list statistics

Python Basics easy

Map, Filter, Reduce

Implement three functions using map, filter, and reduce to manipulate a list of integers.

map filter reduce

Python Basics easy

Count Leading Zeros

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

lists iteration counting

Showing 9 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.