diff --git a/examples/run_parameter_sweep.py b/examples/run_parameter_sweep.py
index aa8a908..f0bf9b1 100644
--- a/examples/run_parameter_sweep.py
+++ b/examples/run_parameter_sweep.py
@@ -1,8 +1,13 @@
-from parallel_slab import NeoHookeanSolution, GeneralizedMooneyRivlinSolution
-from parallel_slab import run_and_plot
+import os
+
 import numpy as np
 import psweep as ps
-import os
+
+from parallel_slab import (
+    GeneralizedMooneyRivlinSolution,
+    NeoHookeanSolution,
+    run_and_plot,
+)
 
 
 def evaluate(pset):