save project

diy2.py

@@ -6,7 +6,7 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    else: name  != username
+    elif: name  != username
            print("用户名不存在，请重新输入！")
            continue
     else: password != userpassword