diff --git a/tests/core/test_results.py b/tests/core/test_results.py
index f25ab0c40a6ea..334062ae994a2 100644
--- a/tests/core/test_results.py
+++ b/tests/core/test_results.py
@@ -30,6 +30,7 @@
 
 def _setup_ddp(rank, worldsize):
     import os
+    
     os.environ["MASTER_ADDR"] = "localhost"
 
     # initialize the process group