def func01():
    print("func01 is show ......")


# func01()
# 函數(shù)名存放的是函數(shù)所在空間的地址
# print(func01)
# 函數(shù)名也可以像普通變量一樣賦值
# func02 = func01
# func02()

def foo(func):
    func()


foo(func01)

# 閉包的構成條件:
# 1在函數(shù)嵌套(函數(shù)里面再定義函數(shù))的前提下

def func_out(num1):
    def func_inner(num2):
        # 2內(nèi)部函數(shù)使用了外部函數(shù)的變量(還包括外部函數(shù)的參數(shù))
        num = num1 + num2
        print("num的值為", num2)

    # 3外部函數(shù)返回了內(nèi)部函數(shù)
    return func_inner


# 創(chuàng)建閉包實例
f = func_out(10)
# 執(zhí)行閉包
f(1)
f(2)

# 外部函數(shù)
def config_name(name):
    # 內(nèi)部函數(shù)
    def say_info(info):
        print(name + ":" + info)

    return say_info
tom = config_name("tom")
tom("你好")
tom("你在嗎")

jerry = config_name("jerry")
jerry("你好")
jerry("我在呢")

# 外部函數(shù)
def config_name(name):
    # 內(nèi)部函數(shù)
    def say_info(info):
        print(name + ":" + info)

    return say_info


tom = config_name("tom")
tom("你好")
tom("你在嗎")

jerry = config_name("jerry")
jerry("你好")
jerry("我在呢")

# 外部函數(shù)
def func_out(num1):
    # 內(nèi)部函數(shù)
    # aaa = 10

    def func_inner(num2):
        nonlocal num1
        num1 = num2 + 10
    print(num1)
    func_inner(10)
    print(num1)

    return func_inner
# num1 = 10
# f = func_out(10)
# 調(diào)用閉包 = 內(nèi)部函數(shù) num2 = 10
# f(10)

func_out(10)

# 1.定義一個裝飾器（裝飾器的本質(zhì)是閉包）
def check(fn):
    def inner():
        print("登錄驗證")
        fn()

    return inner

# 需要被裝飾的函數(shù)
def comment():
    print("發(fā)表評論")

# 2使用裝飾器裝飾函數(shù)（增加一個登錄功能）
comment = check(comment)
comment()

# 1定義一個裝飾器(裝飾器的本質(zhì)是閉包)
def check(fn):
    def inner():
        print("請先登陸")
        fn()

    return inner
# 2使用裝飾器裝飾函數(shù)（增加一個登陸功能）
# 解釋器遇到@check 會立即執(zhí)行 comment = check(comment)

@check
def comment():
    print("發(fā)表評論")
comment()

import time
# 1 定義裝飾器
def get_time(fn):
    def inner():
        start = time.time()
        fn()
        end = time.time()

        print("時間：", end - start)

    return inner

# 2 裝飾函數(shù)
# 要被裝飾的函數(shù)
@get_time
def func():
    for i in range(100000):
        print(i)
func()

# 定義裝飾器
def logging(fn):  # fn = sum_num
    def inner(a, b):
        fn(a, b)

    return inner  # sum_num = inner

# 使用裝飾器裝飾函數(shù)
@logging
def sum_num(a, b):
    result = a + b
    print(result)
sum_num(1, 2)

# 定義裝飾器
def logging(fn):  # fn = sum_num
    def inner(a, b):
        result = fn(a, b)
        return result

    return inner  # sum_num = inner

# 使用裝飾器裝飾函數(shù)
@logging
def sum_num(a, b):
    result = a + b
    return result
result = sum_num(1, 2)
print(result)

# 定義裝飾器
def logging(fn):  # fn = sum_num
    def inner(*args, **kwargs):
        fn(*args, **kwargs)

    return inner  # sum_num = inner

# 使用裝飾器裝飾函數(shù)
@logging
def sum_num(*args, **kwargs):
    print(args, kwargs)
sum_num(1, 2, 3, age="18")

# 裝飾器
def logging(flag):  # flag = "+"

    # 外部函數(shù)
    def decorator(fn):
        # 內(nèi)部函數(shù)
        def inner(num1, num2):
            # 判斷流程
            if flag == "+":
                print("--正在努力加法計算--")
            elif flag == "-":
                print("--正在努力減法計算--")
            result = fn(num1, num2)
            return result

        return inner

    # 返回裝飾器
    return decorator
# 被帶有參數(shù)的裝飾器裝飾的函數(shù)
@logging('+')  # 1 logging("+") 2 @decorator起到裝飾器的功能了
def add(a, b):
    result = a + b
    return result
# 執(zhí)行函數(shù)
result = add(1, 3)
print(result)

# 定義類裝飾器
class Check(object):
    def __init__(self, fn):
        self.__fn = fn

    def __call__(self, *args, **kwargs):
        print("登錄")
        self.__fn()
@Check
def comment():
    print("發(fā)表評論")
comment()