# _*_ coding: utf-8 _*_ # 装饰器的语法糖 # @装饰器的名字：要在被装饰对象正上方单独一行写上 import time # 引用time内置函数 def timmer(func):     def wrapper(*args, **kwargs):         start = time.time()         res = func(*args, **kwargs)         stop = time.time()         print('Run time is %s' %(stop - start))         return res     return wrapper #（new）index = timmer(（旧）index的内存地址 = func) # index的内存地址 = func @timmer def index():     print('Welcome to index page')     time.sleep(1) @timmer#home = timmer(home) def home(name):     print('welcome %s to home page' %name)     time.sleep(1)     return 888 index() res = home('oOC') print(res) ####无参装饰器模版#### def outter(func):     def wrapper(*args,**kwargs):         #在调用函数前加功能         res=func(*args,**kwargs) #调用被装饰的\也就是最原始的那个函数         #在调用函数后加功能         return res     return wrapper # @outter #index=outter(index) #index=wrapper def index():     print('welcome to index page')     time.sleep(3) index()