diff --git a/common/lib/calc/tests/test_calc.py b/common/lib/calc/tests/test_calc.py
index 967166121c..24f4f7d1e4 100644
--- a/common/lib/calc/tests/test_calc.py
+++ b/common/lib/calc/tests/test_calc.py
@@ -7,6 +7,7 @@ import numpy
 import calc
 from pyparsing import ParseException
 
+
 class EvaluatorTest(unittest.TestCase):
     """
     Run tests for calc.evaluator