def func_out(num1):
    def inner(num2):
        res = num1 + num2
        print(res)
    return inner
# a = func_out(10)(10)
a = func_out(10)
a(10)

def func_out():
    # 外部函數(shù)的變量
    num1 = 10
    def func_inner():
        # 在閉包內(nèi)修改外部函數(shù)的變量
        nonlocal num1
        num1 = 20
        res = num1 +20
        print(res)
    print("修改前的變量", num1)
    func_inner()
    print("修改后的變量", num1)
    return func_inner
new_func = func_out()
new_func()

def comment():
    print("執(zhí)行祖?zhèn)鞔a.....")
    print("發(fā)表評(píng)論")
# 調(diào)用評(píng)論功能
comment()

def decorator(func):
    def inner():
        print('正在驗(yàn)證登錄者身份...\n驗(yàn)證成功')
        func()
    return inner


def comment():
    print("執(zhí)行祖?zhèn)鞔a.....")
    print("發(fā)表評(píng)論")
# 調(diào)用評(píng)論功能
comment = decorator(comment)
comment()

def decorator(func):
    def inner():
        print('正在驗(yàn)證登錄者身份...\n驗(yàn)證成功')
        func()
    return inner

@decorator
def comment():
    print("執(zhí)行祖?zhèn)鞔a.....")
    print("發(fā)表評(píng)論")

# 調(diào)用函數(shù)
comment()

def decorator(func):
    # 測(cè)試裝飾器的執(zhí)行時(shí)機(jī)
    print('--remark1----')
    def inner():
        print('正在驗(yàn)證登錄者身份...\n驗(yàn)證成功')
        func()
    print('----remark2---')
    return inner

@decorator
def comment():
    print("執(zhí)行祖?zhèn)鞔a.....")
    print("發(fā)表評(píng)論")

def logging(fn):
    def inner(num1,num2):
        print('執(zhí)行了一次計(jì)算')
        fn(num1,num2)
    return 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)

def logging(fn):
    def inner(num1,num2):
        print('執(zhí)行了一次計(jì)算')
        result = fn(num1,num2)
        return result
    
    return inner
# 使用裝飾器裝飾函數(shù)
@logging
def sum_num(a,b):
    result = a + b
    return result
    
print(sum_num(1,2))

def logging(fn):
    def inner(*args, **kwargs):
        result = fn(*args, **kwargs)
        return result
    return inner

@logging
def sum_num(a,b):
    result = a + b
    return result

def make_div(func):
    print("make_div裝飾器執(zhí)行了")
    def inner():
        # 在內(nèi)部函數(shù)對(duì)已有函數(shù)進(jìn)行裝飾
        result = "<div>" + func() +"</div>"
        return result
    return inner

def make_p(func):
    print("make_p裝飾器執(zhí)行了")
    def inner():
        # 在內(nèi)部函數(shù)對(duì)已有函數(shù)進(jìn)行裝飾
        result = "<p>" + func() +"</p>"
        return result
    return inner

@make_div
@make_p
def content():
    return "人生苦短，我用Python"

def return_decorator(flag):
    def decorator(func):
        def inner(a,b):
            if flag == '+':
                print("正在進(jìn)行加法運(yùn)算")
            elif flag == '-':
                print("正在進(jìn)行減法運(yùn)算")
            func(a,b)
        return inner
    return decorator
@return_decorator('+')
def add_num(a,b):
    print(a+b)

add_num(1,5)

class MyDecorator(object):
    def __init__(self,func):
        self.__func = func
    # 實(shí)現(xiàn)__call__方法，讓對(duì)象變成可調(diào)用的對(duì)象，
    # 可調(diào)用的對(duì)象能夠像函數(shù)一樣被使用。
    def __call__(self,*args,**kwargs):
        # 對(duì)已有參數(shù)進(jìn)行封裝
        print('--正在進(jìn)行裝飾-----')
        self.__func()
        
@MyDecorator
def show():
    print("hello")

# 指向MyDecorator類創(chuàng)建實(shí)例對(duì)象--> show()==> 對(duì)象（）
show()