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Why use functools.wraps when writing decorators?

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01

Understand the problem

Explain wraps.

decoratorwraps
02

Attempt it yourself

Sketch your approach before reading the solution — that's what interviews test.

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03

Study the solution

Wrapping a function replaces its __name__, __doc__, and signature with the wrapper's. @functools.wraps(func) on the inner wrapper copies that metadata back, so introspection, docs, and debugging still reflect the original function.

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04

Run the code

PYWithout wraps the name/doc are lost; with it they survive
05

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