python实训案例-用户账户管理

python实训案例-用户账户管理

描述	具体
语言	python
题目描述	某些网站要求访问者在访问网站内容之前必须先进行登录，若访问者没有该网站的账号，则需要先进行注册。访问者注册完账号后，网站的服务器会保存账号信息，以便访问者下次访问网站可根据保存的信息验证访问者身份。未保障账户安全，访问者可时常修改账户的密码；
要求	注册，登录，修改密码，注销账号

结果：

# 用户类
class User:
    name = ""
    password = ""


# Dao层数据类
# 用于和文件进行交互
class DaoDate:

    # 注册函数
    def Register(self, user):
        userId = user.name
        userPassword = user.password
        with open('userFile.txt', 'r') as file:
            userDate = file.readline()
            while userDate:
                if userDate.split('~')[0] == userId:
                    return False
                userDate = file.readline()
            pass
        with open('userFile.txt', 'a+') as file:
            line = userId + "~" + userPassword
            file.writelines(line + "\n")
            return True
            pass

    # 登录函数
    def Login(self, user):
        with open('userFile.txt', 'r') as file:
            message = file.readline()
            while message:
                Date_name = message.split('~')[0]
                Date_pass = message.split('~')[1]
                if Date_name == user.name:
                    if Date_pass == user.password + "\n":
                        return True
                message = file.readline()
            return False

    # 修改密码
    def upPassword(self, user):
        lineList = []
        with open('userFile.txt', 'r') as file:
            lineList = file.readlines()
            for mes in lineList:
                if user.name == mes.split("~")[0]:
                    lineList.remove(mes)
                    lineList.append(user.name + "~" + user.password + "\n")
                    break
            pass

        with open('userFile.txt', 'w') as file:
            pass

        with open('userFile.txt', 'w') as file:
            for i in lineList:
                file.writelines(i)
            pass

    def Zhuxiao(self, us):
        with open('userFile.txt', 'r') as ff:
            lineList = ff.readlines()
            for mes in lineList:
                if us.name == mes.split("~")[0]:
                    lineList.remove(mes)
                    break
            pass

        with open('userFile.txt', 'w') as file:
            pass

        with open('userFile.txt', 'w') as file:
            for i in lineList:
                file.writelines(i)
            pass


# u = User()
# u.name = "123q"
# u.password = "45kdwjcner6"
# d = DaoDate()
# print(d.Login(u))
# d.upPassword(u)

# 展示界面
def View():
    print("  ------欢迎来到登录界面------")
    print("-" * 30)
    print("|", " " * 11, "1.注册", " " * 8, "|")
    print("|", " " * 11, "2.登录", " " * 8, "|")
    print("|", " " * 11, "3.修密", " " * 8, "|")
    print("|", " " * 11, "4.注销", " " * 8, "|")
    print("|", " " * 11, "5.退出", " " * 8, "|")
    print("-" * 30)


View()
flag = False
fun = int(input("请输入你的操作："))
while fun != 5:
    if fun == 1:  # 进到注册界面
        UserId = str(input("请输入你的账号："))
        UserPassword = str(input("请输入你的密码："))
        u = User()
        u.name = UserId
        u.password = UserPassword
        d = DaoDate()
        boo = d.Register(u)
        if boo:
            print("注册成功！")
        else:
            print("注册失败！")
    elif fun == 2:  # 进到登录界面
        Login_UserId = input("请输入你的账号：")
        Login_UserPassword = input("请输入你的密码：")
        u = User()
        u.name = Login_UserId
        u.password = Login_UserPassword
        d = DaoDate()
        boo = d.Login(u)
        if boo:
            print("登录成功！")
        else:
            print("登录失败！")
    elif fun == 3:  # 进到修改密码阶段
        Test_UserId = input("请输入你的原始账号：")
        Test_UserPassword = input("请输入你的原始密码：")
        u = User()
        u.name = Test_UserId
        u.password = Test_UserPassword
        d = DaoDate()
        boo = d.Login(u)
        if boo:
            newPassword_1 = input("请输入你的新密码：")
            newPassword_2 = input("请再次输入你的新密码：")
            while newPassword_1 != newPassword_2:
                print("两次密码不一致，请重新输入！")
                newPassword_1 = input("请输入你的新密码：")
                newPassword_2 = input("请再次输入你的新密码：")
            u.password = newPassword_1
            d.upPassword(u)
        else:
            print("登录失败！")
    elif fun == 4:
        Test_UserId = input("请输入你要注销的账号：")
        Test_UserPassword = input("请输入你要注销的密码：")
        us = User()
        us.name = Test_UserId
        us.password = Test_UserPassword
        d = DaoDate()
        boo = d.Login(us)
        if boo:
            d.Zhuxiao(us)
            print("注销成功")
        else:
            print("注销失败！")
    else:
        print("输入无效,请重新输入！")
    fun = int(input("请输入你的操作："))