python装饰器

#装饰器需要用到，闭包，高阶函数，函数作用域
# import time
# def aoo():
#     print("i love you!")
#     time.sleep(3)
# def baa():
#     print("i miss you!")
#     time.sleep(2)
# # 接下来我们要计算上面两个程序运行时间
# def show_time(f):
#     def inner():
#         star_time = time.time()
#         f()
#         end_time = time.time()
#         print('use%s' % (end_time-star_time ))
#     return inner
#
# aoo=show_time(aoo)
# aoo()




# 高级一点：
# import time
# def show_time(f):
#     def inner():
#         star_time = time.time()
#         f()
#         end_time = time.time()
#         print('use%s' % (end_time-star_time ))
#     return inner
#
# @show_time#相当于是把上面的函数方法加载到下面函数
# def aoo():
#     print("i love you!")
#     time.sleep(3)
# aoo()#调用aoo函数
#
# @show_time
# def baa():
#     print("i miss you!")
#     time.sleep(2)
# baa()





#功能函数加参数
import time
def show_time(f,):
    def inner():
        star_time = time.time()
        f()
        end_time = time.time()
        print('use%s' % (end_time-star_time ))
    return inner

@show_time#相当于是把上面的函数方法加载到下面函数
def aoo(*a,**b):
    print("i love you!")
    time.sleep(3)
    num=0
    for i in a:
        num+=i
        print(i)
aoo(1,5,9)#调用aoo函数

@show_time
def baa():
    print("i miss you!")
    time.sleep(2)
# baa()