python作业

python作业

• Day1作业

  • 作业一：编写登录接口
    • 输入用户名密码
    • 认证成功后显示欢迎信息
    • 输入三次错误后锁定用户

import sys

locking = ('login/locking.txt')
login = ('login/login.txt')

def main():
    count_min = 0
    count_max = 3

    while count_min < count_max:
        username = input("请输入用户名：")                     # 引导用户输入用户名
        with open(locking, 'r') as locking_file:              # 打开记载锁定用户的文件
            for line in locking_file.readlines():
                if username == line.strip('
'):               # 判断用户是否在锁定的用户文件里
                    sys.exit('%s用户已经被锁定。。。' % username)

        password = input("请输入用户密码：")                    # 引导用户输入密码
        with open(login, 'r') as login_file:
            for line in login_file.readlines():
                user,passwd = line.strip('
').split()         # 对记载用户名和密码的文件进行格式化并且分别赋值给user和passwd
                flog = False                                   # 定义一个变量
                if username == user and password == passwd:    # 判断用户名密码是否正确
                    print("登陆成功！")
                    flog = True                                # 对赋值的变量进行修改已保证退出程序
                    break
            if flog == False:
                if count_min < 2:
                    print("用户名密码错误，请重新输入！")
                else:
                    lock(username)                             # 输入错误三次则把用户加入锁定文件
                count_min += 1
            else:
                break

def lock(username):
    with open(locking, 'a') as locking_file:
        locking_file.write(username)
        locking_file.write('
')

if __name__ == '__main__':
    main()

• • 作业二：多级菜单
    • 三级菜单
    • 可以依次选择进入各自菜单
    • b：返回上层菜单
    • q：退出程序

 

import sys

dic = {'河北省':{'辛集市':['平山县','井陉县','栾城县','正定县',],'晋州市':['迁西县','滦南县','玉田县','唐海县','乐亭县',],'邯郸市':['邯郸县','永年县','曲周县','馆陶县',]},'山西省':{'太原市':['平顺县','襄垣县','沁源县','屯留县',],'古交市':['泽州县','陵川县','阳城县','沁水县',]}}

def help(command):          # 打印帮助文档
        print ('''
                i   进入菜单
                b   返回上层菜单
                q   退出程序
            xxxxx   输入省市县全称进入下一级
            ''')

def province(command):      # 打印第一级菜单
    province = dic.keys()
    i = 1
    for province in province:
        print(str(i) + '.' + province)
        i += 1

def city(command):          # 打印第二级菜单
    city = dic.get(command)
    i = 1
    for city in city.keys():
        print(str(i) + '.' + city)
        i += 1

def county(command):        # 打印第三级菜单
    county = city_dic.get(command)
    # print(county)
    i = 1
    for county in county:
        print(str(i) + '.' + county)
        i += 1

def q(command):
    sys.exit('欢迎下次查询')

def main():
    print ('''
        帮助命令help
        ''')
    while True:
        command = input("province > ")     # 引导用户输入
        if command in 'help' or command == '?':
            help(command)
        elif command == 'i':
            province(command)
            while True:
                li = list(dic.keys())
                command = input("city > ")
                # print(command)
                # print(type(command))
                if command == 'b':
                    # print(1)
                    break
                elif command == 'q':
                    q(command)
                elif command in li:
                    city(command)
                    city_dic = dic.get(command)
                    city_li = list(city_dic.keys())
                    while True:
                        command = input("county > ")
                        # print(city_li)
                        # print(command)
                        global city_dic
                        if command in city_li:
                            county(command)
                            # print(command)
                        elif command == 'b':
                            break
                        elif command == 'q':
                            q(command)
                        elif len(command) == 0:
                            continue
                        else:
                            print('输入错误，请重新输入')
                            continue
                elif len(command) == 0:
                    continue
                else:
                    print('输入错误，请重新输入')
                    continue
        elif command == 'q':
            q(command)
        elif len(command) == 0:
            continue
        else:
            print('输入错误，请重新输入。。。')

if __name__ == '__main__':
    main()