Fixed tests that I broke a few commits ago.

tests/regressiontests/i18n/commands/compilation.py

@@ -3,11 +3,12 @@ import os
 from django.core.management import call_command, CommandError
 from django.test import TestCase
 from django.test.utils import override_settings
-from django.utils import translation
+from django.utils import translation, six
 from django.utils.six import StringIO
 
 test_dir = os.path.abspath(os.path.dirname(__file__))
 
+
 class MessageCompilationTests(TestCase):
 
     def setUp(self):