您好,登录后才能下订单哦!
本文实例讲述了Python3.5装饰器。分享给大家供大家参考,具体如下:
#!/usr/bin/env python # -*- coding:utf-8 -*- # Author:ZhengzhengLiu #高阶函数+嵌套函数==>装饰器 import time def timer(func): #timer(test1)-->func=test1 def decor(): start_time = time.time() func() #run test1 stop_time = time.time() print("the run time of func is %s" %(stop_time-start_time)) return decor @timer #test1 = timer(test1) def test1(): time.sleep(3) print("in the test1") @timer #test2 = timer(test2) def test2(): time.sleep(3) print("in the test2") print(timer(test1)) #打印deco的地址 #test1 = timer(test1) #test2 = timer(test2) test1() #-->执行decor test2()
运行结果:
<function timer.<locals>.decor at 0x00B720C0>
in the test1
the run time of func is 3.000171661376953
in the test2
the run time of func is 3.000171661376953
1、装饰器修饰有参数函数
#高阶函数+嵌套函数==>装饰器 import time def timer(func): #timer(test1)-->func=test1 def decor(arg1,arg2): start_time = time.time() func(arg1,arg2) #run test2 stop_time = time.time() print("the run time of func is %s" %(stop_time-start_time)) return decor @timer #test2 = timer(test2) = decor test2(name)==>decor(name) def test2(name,age): print("test2:",name,age) test2("liu",23)
运行结果 :
test2: liu 23
the run time of func is 0.0
2、装饰器修饰多个函数,有的函数带参数,有的函数不带参数的情况(采用参数组)
#高阶函数+嵌套函数==>装饰器 import time def timer(func): #timer(test1)-->func=test1 def decor(*args,**kwargs): start_time = time.time() func(*args,**kwargs) #run test1 stop_time = time.time() print("the run time of func is %s" %(stop_time-start_time)) return decor @timer #test1 = timer(test1) def test1(): time.sleep(3) print("in the test1") @timer #test2 = timer(test2) = decor test2(name)==>decor(name) def test2(name,age): time.sleep(1) print("test2:",name,age) #test1 = timer(test1) #test2 = timer(test2) test1() #-->执行decor test2("liu",23)
运行结果:
in the test1
the run time of func is 3.0036065578460693
test2: liu 23
the run time of func is 1.0084023475646973
更多关于Python相关内容可查看本站专题:《Python数据结构与算法教程》、《Python Socket编程技巧总结》、《Python函数使用技巧总结》、《Python字符串操作技巧汇总》及《Python入门与进阶经典教程》
希望本文所述对大家Python程序设计有所帮助。
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。