用python实现用户注册登陆系统

偏执的太偏执、 2024-03-17 11:02 63阅读 0赞

**1** **问题**

如何用python实现用户注册后记录账号并能够登陆？

**2** **方法**

1.  引入os模块；
2.  使用db类；
3.  定义函数；
4.  If判断语句；

代码清单 1

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 <td>import os def login(username,password): &nbsp; &nbsp;f = open("db",'r') &nbsp; &nbsp;for line in f: &nbsp; &nbsp; &nbsp; &nbsp;line_list = line.strip().split("|") &nbsp; &nbsp; &nbsp; &nbsp;if line_list[0] == username and line_list[1] == password: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;return True &nbsp; &nbsp;return False def register(username,password): &nbsp; &nbsp;f = open("db",'a') &nbsp; &nbsp;temp = "\n" + username + "|" + password &nbsp; &nbsp;f.write(temp) &nbsp; &nbsp;f.close() &nbsp; &nbsp;return True def main(): &nbsp; &nbsp;choice = input("***欢迎来到wyf景区，请选择您的操作***\n1:登录\n2:注册\n3:游客登录\n请输入您的操作:") &nbsp; &nbsp;if choice == "1": &nbsp; &nbsp; &nbsp; &nbsp;user = input("请输入用户名：") &nbsp; &nbsp; &nbsp; &nbsp;pwd = input("请输入密码：") &nbsp; &nbsp; &nbsp; &nbsp;result = login(user,pwd) &nbsp; &nbsp; &nbsp; &nbsp;if result: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;print("登录成功") &nbsp; &nbsp; &nbsp; &nbsp;else: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;print("登录失败，请检查用户名或密码是否准确") &nbsp; &nbsp;elif choice == "2": &nbsp; &nbsp; &nbsp; &nbsp;user = input("请输入用户名：") &nbsp; &nbsp; &nbsp; &nbsp;pwd = input("请输入密码：") &nbsp; &nbsp; &nbsp; &nbsp;result = register(user,pwd) &nbsp; &nbsp; &nbsp; &nbsp;if result: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;print('注册成功') &nbsp; &nbsp; &nbsp; &nbsp;else: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;pass &nbsp; &nbsp;elif choice == "3": &nbsp; &nbsp; &nbsp; &nbsp;print('******系统正在加载，请稍后******') &nbsp; &nbsp;else: &nbsp; &nbsp; &nbsp; &nbsp;print('你的选择有误，请重新输入') main()</td> 
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**3** **结语**

针对如何用python程序实现用户注册登陆系统的问题，提出使用os模块、db类、定义函数和if判断语句的方法，通过实验，证明该方法是有效的。通过对os模块、db类的学习，定义函数和if判断语句的运用，丰富了学科知识，巩固了课堂上学习的知识，提升了将所学知识运用到实际生活中的能力。