save project

diy2.py

@@ -5,7 +5,11 @@ while True:
     password = input("请输入密码:")
     if name == username and password == userpassword:        
         print("登录成功!")
-        break 
+        break
+    if name != username:
+        print('用户名错误，请重新输入')
+    if password !=userpassword:
+        print('密码错误，请重新输入')     
     print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")