Practice Arena

Python Coding
Challenges

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

925 challenges 556 easy 323 medium 46 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

Decorators & Context Managers easy

Once Decorator: Run a Function Only Once

Implement a decorator that caches and returns the result of the first call for subsequent calls.

decorators closures caching

Decorators & Context Managers easy

Timing Decorator

Implement a decorator that prints the execution time of a function.

decorators time performance

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

Decorators & Context Managers easy

Print Args Decorator

Write a decorator that prints function name and arguments, then returns the original result.

decorators functions wrappers

Decorators & Context Managers easy

File Open Context Manager

Create a class that acts as a context manager for opening a virtual file in memory.

context-manager file-io python

Decorators & Context Managers easy

Timer Context Manager

Implement a context manager that measures execution time of a with block and stores it.

context-manager timing measurement

Decorators & Context Managers easy

Suppress stderr manager

Implement a context manager that suppresses all output written to stderr during its block.

context-managers stderr redirect

Decorators & Context Managers easy

Context Decorator Dual

Implement a timing decorator and a context manager that both record elapsed time in seconds.

decorator context-manager time

Decorators & Context Managers easy

Count calls decorator

Implement a decorator that counts and reports how many times the wrapped function is called.

decorator closure function

Decorators & Context Managers easy

Log Calls Decorator

Create a decorator that prints call details and returns the original result.

decorators logging function-wrappers

Decorators & Context Managers easy

Lock Context Manager

Implement a Lock class with acquire/release and context manager support.

context-manager threading lock

Decorators & Context Managers easy

Class-based decorator with call validation

Build a class-based decorator that validates a single argument's type and logs successful invocation.

decorators class validation

Showing 1–12 of 12 challenges · easy · Decorators & Context Managers

Decorators & Context Managers — Python coding challenges

What you will find here

This page lists decorators & context managers 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.