save project

diy2.py

@@ -6,9 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-if name != username
+    else:
         print("用户名不存在！")
-if password != userpassword
+    else:
         print("密码错误!")
     continue
         print("用户名和密码错误!请重新输入")