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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

Integer division and remainder

Write a function that performs integer division and returns both quotient and remainder.

operators division remainder

Python Basics easy

Is divisible by?

Create a function that returns True if a is divisible by b with no remainder, with a clear definition of edge cases.

division modulo conditionals

Lists & Arrays medium

Product except self

Return an array where output[i] is the product of all elements except nums[i], without using division.

arrays prefix-sum

OOP & Classes medium

Complex Number Class

Implement a Complex class supporting addition, subtraction, multiplication, division, equality, and string formatting.

classes magic-methods arithmetic

Error Handling & Exceptions easy

Safe divide function

Implement safe_divide that returns None on ZeroDivisionError and TypeError.

try-except division error-handling

Error Handling & Exceptions easy

Divide with zero check

Write a function that safely divides two numbers, catching division by zero.

exceptions division error-handling

Error Handling & Exceptions easy

Else on try block

Implement a function that uses try-except-else to safely divide two numbers and return a result or error description.

exception-handling try-except-else division

Bit Manipulation medium

Divide using shifts

Implement division of two integers using only bit shifts and arithmetic, without using division or modulo operators.

integer division bit shifts overflow

Showing 8 challenges

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.