import time

def timer(func): #timer(test1)  func=test1

    def deco(*args,**kwargs):

        start_time=time.time()

        func(*args,**kwargs)   #run test1()

        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(1)

    print('in the test1')

@timer # test2 = timer(test2)  = deco（内存地址）  test2(name) =deco(name)

def test2(name,age):

    print("test2:",name,age)

test1()

test2("alex",22)