Decorator that takes arguments

Question

Accepted Answer

A decorator that takes arguments needs an extra layer of nesting: `repeat(3)` returns `decorator`, and `decorator(say)` returns `wrapper`. The `@repeat(3)` line calls `repeat(3)` first, producing the actual decorator, which then wraps `say`. Calling `say('hi')` runs the loop 3 times, printing `'hi'` on each iteration.