a_simple_decorator.py

def a_simple_decorator(f):
    def a_logger_for_f(*args, **hashs):
        print("Logger called")
        result = f(*args, **hashs)
        print("The result is: {}".format(result))
        return result
    return a_logger_for_f

@a_simple_decorator
def a_simple_method(a, b):
    return (a, b, a+b, a-b, a*b)

a_simple_method(2, 3)
a_simple_method(b=3, a=2)

# Logger called
# The result is: (2, 3, 5, -1, 6)
# Logger called
# The result is: (2, 3, 5, -1, 6)