save project

diy2.py

@@ -6,6 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
+    if name != username and password != userpassword:
+        print("用户名,密码错误!请重新输入")
+    else:
         if not name == username:
             print("用户名错误!请重新输入")
         if not password == userpassword: