函数修饰器的理解

import sys
def a_new_decorator(a_func):
    def wrapTheFunction():
        print('萨瓦迪卡')
        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():
    """Hey you! Decorate me!"""
    print("I am the function which needs some decoration to "
          "remove my foul smell")   
a_function_requiring_decoration()