A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Seniority

L4

Problem

Implement a @timer decorator that wraps a function and prints its execution time. The decorator must support any args and kwargs. The test harness receives a list of function calls (each ['name', args, kwargs]) and expects a list of booleans indicating the timer worked.

Summary

Wrap any function to capture how long it takes.

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