diff --git a/source/tests/pt/test_stat.py b/source/tests/pt/test_stat.py
index a3a29d74b9..b7e3f6e2d3 100644
--- a/source/tests/pt/test_stat.py
+++ b/source/tests/pt/test_stat.py
@@ -337,7 +337,6 @@ def tf_compute_input_stats(self):
         )
 
 
-
 class TestExcludeTypes(DatasetTest, unittest.TestCase):
     def setup_data(self):
         original_data = str(Path(__file__).parent / "water/data/data_0")
@@ -375,8 +374,7 @@ def tf_compute_input_stats(self):
         box = self.dp_merged["box"]
         self.dp_d.compute_input_stats(coord, box, atype, natoms, self.dp_mesh, {})
 
-        
-        
+
 class TestOutputStat(unittest.TestCase):
     def setUp(self):
         self.data_file = [str(Path(__file__).parent / "water/data/data_0")]
@@ -465,6 +463,5 @@ def test_assigned(self):
         )
 
 
-
 if __name__ == "__main__":
     unittest.main()