Art decoators

art_deco.py

# see https://naucse.python.cz/course/mi-pyt/intro/magic/

import functools

def art_deco(func):
    print(f"Decorating {func.__name__}")

    @functools.wraps(func)
    def inner(*args, **kwargs):
        print(f"Starting {func.__name__}")
        retv = func(*args, **kwargs)
        print(f"Result {func.__name__} is {retv}")
        return retv

    return inner


@art_deco
def foo(a):
    "This is very important function!"
    print(f"foo: a is {a}")
    return a


if __name__ == '__main__':
    # print("main is starting")
    print(f'foo is {foo.__name__}')
    print(f'doc in foo is {foo.__doc__}')
    #foo(2)