diff --git a/gklearn/model_selection/__init__.py b/gklearn/model_selection/__init__.py
index 661478b..23f5f67 100644
--- a/gklearn/model_selection/__init__.py
+++ b/gklearn/model_selection/__init__.py
@@ -5,7 +5,6 @@ Created on Fri Jun 24 14:25:57 2022
 
 @author: ljia
 """
-
 from ._split import BaseCrossValidatorWithValid
 # from ._split import BaseShuffleSplit
 from ._split import KFoldWithValid