Python装饰器

# __author__ = 'ZSnail'




import time






def test1() :

    
    time.sleep(3)

    
print('in the test1')




def test2() :

    
time.sleep(3)

    
print('in the test2')




# 如果不修改源代码情况下添加功能


# 高阶函数


# def deco(function) :


#     start = time.time()

#     function()

#

#     
   stop = time.time()

#     print('the time is %s' %s(start - stop))


# 使用:
# deco(?function?)  修改了调用方式
# 如果不修改调用方式
# test1 = deco(test1)




#装饰器

#wrapper  包装

def demo(func) :
    def wapper(*arr, **obj):

        start = time.time()  # 功能


        func(*arr, **obj)   # 传进去参数


        stop = time.time()  # 功能

        print('the time is %s' %(stop - start))

    return wapper


@demo
def test3() :

    time.sleep(3)

    print('lallalalalalla')

test3()


# part57