--- a/tests/test-bundle2-format.t	Tue Aug 22 15:04:36 2017 -0400
+++ b/tests/test-bundle2-format.t	Tue Aug 22 15:05:51 2017 -0400
@@ -12,8 +12,9 @@
   > This extension allows detailed testing of the various bundle2 API and
   > behaviors.
   > """
-  > 
-  > import sys, os, gc
+  > import gc
+  > import os
+  > import sys
   > from mercurial import util
   > from mercurial import bundle2
   > from mercurial import scmutil