diff --git a/examples/run_all_model.py b/examples/run_all_model.py
index 31a82a569..d587eff15 100644
--- a/examples/run_all_model.py
+++ b/examples/run_all_model.py
@@ -68,6 +68,7 @@ def only_allow_defined_args(function_to_decorate):
 def handler(signum, frame):
     os.system("kill -9 %d" % os.getpid())
 
+
 signal.signal(signal.SIGINT, handler)