diff --git a/Examples/Scripts/Python/propagation.py b/Examples/Scripts/Python/propagation.py
index 2d7a5a1143a7..ea54919a89f2 100755
--- a/Examples/Scripts/Python/propagation.py
+++ b/Examples/Scripts/Python/propagation.py
@@ -127,5 +127,8 @@ def runPropagation(trackingGeometry, field, outputDir, s=None, decorators=[]):
     os.makedirs(os.getcwd() + "/propagation", exist_ok=True)
 
     runPropagation(
-        trackingGeometry, field, os.getcwd() + "/propagation", decorators=contextDecorators
+        trackingGeometry,
+        field,
+        os.getcwd() + "/propagation",
+        decorators=contextDecorators,
     ).run()