五：编写装饰器，为多个函数加上认证功能，要求登录成功一次，在超时时间内无需重复登录，超过了超时时间，则必须重新登录

def f4():
    d = {}
    with open('a.txt', mode='rt', encoding='utf-8') as f:
        for line in f:
            i = line.strip('\n').split(':')
            d[i[0]] = i[1]
    return d

import time
def f1(x):
    def f2(func):
        def f3(*args, **kwargs):
            while True:
                flag = True
                d = f4()
                if d[x] == '1':
                    while flag:
                        print('时间开始')
                        start = time.time()
                        name = input('>>>:')
                        pwd = input('>>>:')
                        print('登录')
                        res = func(*args, **kwargs)
                        print('时间结束')
                        stop = time.time()
                        s = stop - start
                        if s < 3:
                            with open('a.txt', mode='at', encoding='utf-8') as f:
                                f.write('%s:%s\n' % (x, '0'))
                            flag = False
                            return res
                        else:
                            continue
                elif d[x] == '0':
                    res = func(*args, **kwargs)
                    return res
        return f3
    return f2
@f1(x='count')
def index():
    print('欢迎来到index')

@f1(x='count')
def home():
    print('欢迎来到home')
index()
home()