装饰器

# __author: "ZXYang"
# date: 2020/11/24
import time

# def fun(n):
#     if n == 1:
#         return 2
#     elif n == 2:
#         return 2
#     else:
#         return fun(n - 1) + fun(n - 2)
#
#
# print(fun(3))

# money = 100
# book = 100
# count = 0
# for a in range(int(money/5)):
#     for b in range(int(money/3)):
#         for c in range(int(money/0.5)):
#             if a * 5 + b * 3 + c * 0.5 <= 100 and a + b + c == 100:
#                 print("a={0}, b={1}, c={2}".format(a, b, c))
#                 count += 1
# print(count)
#
#
# money = 100
# book = 100
# count = 0
#
# for a in range(int(money/5)):
#     for b in range(int(100/3)):
#         for c in range(int(money/0.5)):
#             if a * 5 + b * 3 + c * 0.5 <= 100 and a + b + c == 100:
#                 print(a, b, c)
#                 count += 1
# print(count)

# li = [11, 21, 4, 55, 5, 3, 12]
# li1 = [i % 2 for i in li if i > 5]
# print(li1)

# li = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
# li1 = [[i-2, i-1, i] for i in li if i % 3 == 0]
# print(li1)

# nu1 = 100

"""
闭包
"""
# def aa(a):
#     print("---aa----")
#     nu2 = 101
#
#     def bb():
#         print(nu2)
#         print(a)
#
#     # bb()
#     return bb
#
# nu2 = 1
# # aa()
# bb = aa(11)
# # print(res)
# bb()


"""
装饰器函数(使用闭包)
原功能函数
"""


def aa(fun):
    print("111")

    def bb(*args, **kwargs):
        print("装饰器函数")
        setattr(fun, "name", "li")
        obj = fun(*args, **kwargs)
        return obj

    return bb


def cc(func):
    def dd(*args, **kwargs):
        start_time = time.time()
        func(*args, **kwargs)
        end_time = time.time()
        print("消耗时间：", end_time-start_time)
    return dd


# @aa
# def func1():
#     print("原功能函数")


# func1()
@cc
def sum1(a, b):
    time.sleep(1)
    print(a + b)


# sum1(11, 22)
sum1(a=11, b=22)

# def fun11(a, b, c):
#     print(a, b, c)
#
#
# tu = (11, 22, 33)
# fun11(*tu)

print("==========================")

"""

类实现装饰器

"""


class Li(object):

    def __init__(self, func):
        self.func = func

    def __call__(self, *args, **kwargs):
        print("__call__方法")                       # 加些扩展功能
        return self.func(*args, **kwargs)           # 返回类创建的对象（类用作装饰器时）


# a = aaa()

# a()
# a.fcun111()

                                                      # 类装饰 函数
# @Li
# def add_num(a, b):
#     print("add_num")
#
#
# add_num(11, 22)
# @aa
@Li                                                   # 类装饰器 装饰类
class Hero:

    def func003(self):
        print("==")


a = Hero()
# print(a.name)
a.func003()