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-rw-r--r--mailman/constants.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/mailman/constants.py b/mailman/constants.py
index d924b6722..39c4547f8 100644
--- a/mailman/constants.py
+++ b/mailman/constants.py
@@ -17,6 +17,9 @@
"""Various constants and enumerations."""
+from __future__ import unicode_literals
+
+__metaclass__ = type
__all__ = [
'SystemDefaultPreferences',
]
@@ -29,7 +32,7 @@ from mailman.interfaces.preferences import IPreferences
-class SystemDefaultPreferences(object):
+class SystemDefaultPreferences:
implements(IPreferences)
acknowledge_posts = False