def a_new_decorator(a_func):
    def wrapTheFunction():
        print("I am doing some boring work before executing a_func()")
        a_func()
        print("I am doing some boring work after executing a_func()")
    return wrapTheFunction

@a_new_decorator
def a_function_requiring_decoration():
    print("I am the function which needs some decoration to remove my foul smell")
#the @a_new_decorator is just a short way of saying:
# a_function_requiring_decoration = a_new_decorator(a_function_requiring_decoration)



#程序的执行部分
#a_function_requiring_decoration = a_new_decorator(a_function_requiring_decoration)
a_function_requiring_decoration()