装饰器

#z装饰器
import time

def deco(func):
    def wrapper():
        startT = time.time()
        func()
        endT = time.time()
        msecs = (endT - startT)*1000
        print("it's %f ms" % msecs)
    return wrapper

@deco
def myfunc():
    print('myfunc start......')
    time.sleep(1.7)
    print('myfunc end......')


          
print("myfunc is",myfunc.__name__)
#@deco 代替这段代码myfunc = deco(myfunc)
print('#'*50)
print('myfunc is',myfunc.__name__)
myfunc()