save project

diy1.py

@@ -5,9 +5,9 @@ while True:
     password = input("请输入密码：")
     if name ==username and  password == userpassword:
         print("登录成功")
-    if name!=username:
+    elif name!=username:
         print('用户名错误，请重新输入')
         continue
-    if password != userpassword:
+    else :
         print('密码错误，请重新输入')
 print("欢迎来到贝尔编程")