save project

diy2.py

@@ -6,8 +6,8 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name != username： 
+    elif name != username： 
         print("用户名不存在!请重新输入")
-    if password != userpassword:
+    else password != userpassword:
         print("密码输入有误,请重新输入")    
 print("欢迎来到贝尔编程!")
\ No newline at end of file