commit ea7421018090b7099c5e0a6bd88180f41ebb7bce
Author: Mike Gilbert <floppym@gentoo.org>
Date:   Fri Dec 21 16:33:18 2012 -0500

    Python 2.5 can't parse byte literals, so use bytes() instead.

diff --git a/test/test_xattr.py b/test/test_xattr.py
index 8df00b9..0bca576 100644
--- a/test/test_xattr.py
+++ b/test/test_xattr.py
@@ -12,7 +12,7 @@ from xattr import NS_USER, XATTR_CREATE, XATTR_REPLACE
 
 if sys.hexversion >= 0x03000000:
     PY3K = True
-    EMPTY_NS = b''
+    EMPTY_NS = bytes()
 else:
     PY3K = False
     EMPTY_NS = ''