diff --git a/PyCTBN/tests/utility/test_sample_importer.py b/PyCTBN/tests/utility/test_sample_importer.py
index ad2ddda..f938c70 100644
--- a/PyCTBN/tests/utility/test_sample_importer.py
+++ b/PyCTBN/tests/utility/test_sample_importer.py
@@ -5,12 +5,15 @@
 import unittest
 import os
 import glob
+import json
 import numpy as np
 import pandas as pd
+
+
 from ...PyCTBN.utility.sample_importer import SampleImporter
 from ...PyCTBN.structure_graph.sample_path import SamplePath
 
-import json
+