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-rw-r--r--mailman/interfaces/archiver.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/mailman/interfaces/archiver.py b/mailman/interfaces/archiver.py
index c69b13427..35fee2c9e 100644
--- a/mailman/interfaces/archiver.py
+++ b/mailman/interfaces/archiver.py
@@ -17,12 +17,15 @@
"""Interface for archiving schemes."""
+from __future__ import absolute_import, unicode_literals
+
__metaclass__ = type
__all__ = [
'IArchiver',
'IPipermailMailingList',
]
+
from zope.interface import Interface, Attribute
from mailman.interfaces.mailinglist import IMailingList