diff --git a/codes/python/chapter_searching/binary_search.py b/codes/python/chapter_searching/binary_search.py
index 915573f..0f37478 100644
--- a/codes/python/chapter_searching/binary_search.py
+++ b/codes/python/chapter_searching/binary_search.py
@@ -5,7 +5,6 @@ Author: timi (xisunyy@163.com)
 '''
 
 import sys, os.path as osp
-
 sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
 from include import *