diff --git a/pytorch_lightning/callbacks/pt_callbacks.py b/pytorch_lightning/callbacks/pt_callbacks.py
index 2daf449cf5..af5cbb42be 100644
--- a/pytorch_lightning/callbacks/pt_callbacks.py
+++ b/pytorch_lightning/callbacks/pt_callbacks.py
@@ -1,5 +1,6 @@
 import numpy as np
-import os, shutil
+import os
+import shutil
 from pytorch_lightning.pt_overrides.override_data_parallel import LightningDistributedDataParallel