save project

diy2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name=input("请输入用户名：")
+    password = input("请输入密码：")
+    if name==username and password==userpassword:
+        print("登录成功")# 如果用户输入的账号、密码正确，提示登陆成功
+        break 
+    if name!= username:
+        print("用户名错误")
+        continue      
+    if password != userpassword:
+        print("密码错误")
+print("欢迎来到贝尔编程!")
\ No newline at end of file