diff --git a/problems/0541.反转字符串II.md b/problems/0541.反转字符串II.md
index c89b3a7b..b3e7b022 100644
--- a/problems/0541.反转字符串II.md
+++ b/problems/0541.反转字符串II.md
@@ -298,6 +298,7 @@ class Solution:
 ```
 
 #### Python3 (v3):
+
 ```python
 class Solution:
     def reverseStr(self, s: str, k: int) -> str: