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-rw-r--r--src/mailman/core/switchboard.py7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/mailman/core/switchboard.py b/src/mailman/core/switchboard.py
index 7cab4f4ad..c65b92fac 100644
--- a/src/mailman/core/switchboard.py
+++ b/src/mailman/core/switchboard.py
@@ -24,7 +24,7 @@ written. First, the message is written to the pickle, then the metadata
dictionary is written.
"""
-from __future__ import absolute_import, unicode_literals
+from __future__ import absolute_import, print_function, unicode_literals
__metaclass__ = type
__all__ = [
@@ -40,7 +40,7 @@ import cPickle
import hashlib
import logging
-from zope.interface import implements
+from zope.interface import implementer
from mailman.config import config
from mailman.email.message import Message
@@ -63,8 +63,9 @@ elog = logging.getLogger('mailman.error')
+@implementer(ISwitchboard)
class Switchboard:
- implements(ISwitchboard)
+ """See `ISwitchboard`."""
@staticmethod
def initialize():