--- a/tests/test-status.t	Sun Feb 11 12:55:50 2018 -0800
+++ b/tests/test-status.t	Sun Feb 11 13:00:00 2018 -0800
@@ -465,12 +465,12 @@
 
   $ hg init repo5
   $ cd repo5
-  >>> open("010a", "wb").write("\1\nfoo")
+  >>> open("010a", r"wb").write(b"\1\nfoo")
   $ hg ci -q -A -m 'initial checkin'
   $ hg status -A
   C 010a
 
-  >>> open("010a", "wb").write("\1\nbar")
+  >>> open("010a", r"wb").write(b"\1\nbar")
   $ hg status -A
   M 010a
   $ hg ci -q -m 'modify 010a'