save project

diy2.py

@@ -6,7 +6,8 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
     if name!=username:
-        print("用户名错误!请重新输入")
+    if name!=userpassword
+        print("用户名和密码错误!请重新输入")
         continue
     if name!=userpassword:
         print("密码错误!请重新输入")