diff --git a/pypl/utils.py b/pypl/utils.py
index 0ddd850..7b8cd7c 100644
--- a/pypl/utils.py
+++ b/pypl/utils.py
@@ -3,7 +3,6 @@
 import h5py
 import yaml
 
-
 ry2ev = 13.605693122994017
 bohr2ang = 0.529177210903