--- a/tests/test-bdiff.py	Sun Apr 03 06:10:52 2016 +0300
+++ b/tests/test-bdiff.py	Sun Apr 03 06:12:18 2016 +0300
@@ -1,5 +1,9 @@
+from __future__ import absolute_import
 import struct
-from mercurial import bdiff, mpatch
+from mercurial import (
+    bdiff,
+    mpatch,
+)
 
 def test1(a, b):
     d = bdiff.bdiff(a, b)