improve format

pp_params.py

@@ -1,10 +1,11 @@
 # coding: utf-8
 
-import numpy as np
-import re
-import munch
-import yaml
 import os
+import re
+
+import munch
+import numpy as np
+import yaml
 
 _dir_path = os.path.dirname(os.path.realpath(__file__))