Wrapping a function as you define it is so common that Python has special syntax for it. A function used this way is called a decorator:

def announce(func):
    def wrapper(*args, **kwargs):
        print(f"Calling {func.__name__} with {args}")
        return func(*args, **kwargs)
    return wrapper

@announce
def multiply(a, b):
    return a * b

@announce
def shout(text):
    return text.upper()

print(multiply(3, 4))
print(shout("hi"))

@announce above a def means exactly multiply = announce(multiply) straight after it. Decorators are everywhere in real Python: web frameworks use @app.route("/") to connect URLs to functions, and testing tools use them to mark tests.