A Decorator That Takes Arguments

Hard ⏱ 18 min 33% acceptance ★★★★☆ 4.3

Write repeat(times) — a decorator factory: @repeat(3) makes the function run three times per call, returning a list of the results. Three nested functions deep: factory → decorator → wrapper. This nesting is the single most-asked decorator interview question.

Examples

Example 1

Input

@repeat(3) on roll; roll()

Output

a list of 3 results

Explanation

The factory captured times; the wrapper looped.

Constraints

Exactly the three-layer structure.
Return the list of results.

Topics

Decoratorsdecorator factory

Companies

NetflixUberStripe

Hints

Hint 1

def repeat(times): def decorator(func): def wrapper(...).

Hint 2

Each layer returns the next inner one.

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