Once Decorator: Run a Function Only Once
Implement a decorator that caches and returns the result of the first call for subsequent calls.
Memoize with TTL
Implement a decorator that caches function results for a limited time, returning cached values within the TTL and recomputing after expiry.
LRU Memoize
Implement an LRU memoization decorator that caches results for a fixed number of arguments.
Rate Limit Decorator
Implement a decorator that enforces a maximum number of calls per second for any function.
Profile time decorator
Create a decorator that tracks how many times a function is called and its cumulative execution time.
Showing 5 challenges · 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.