装饰器

import time
def timer(func):
    def deco(*args,**kwargs):
        start_time=time.time()
        func(*args,**kwargs)
        stop_time=time.time()
        print('the func run time is %s' % (stop_time - start_time))
    return deco


@timer#==>test1=timer(test1)
def test1():
    time.sleep(2)
    print('in the test1')
@timer
def test2(name,age):
    time.sleep(1)
    print('in the test2',name,age)

#print(timer(test1))
#test1=timer(test1)
test1()
test2('lian','20')