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Functions & basics

Reusable building blocks — parameters, returns, scope, and clear function design.

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Functions & basics easy

How to Write a Python Decorator with functools.wraps

Create a decorator that wraps a function while preserving its metadata using functools.wraps.

decorator functools wraps
Python 
from functools import wraps


def logger(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        print(f"Calling {func.__name__}")
        return func(*args, **kwargs)
    return wrapper


@logger
def greet(name):
    """Return a friendly greeting."""
    return f"Hello, {name}!"


if __name__ == "__main__":…
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