1 files changed, 11 insertions, 11 deletions

diff --git a/src/mailman/mta/postfix.py b/src/mailman/mta/postfix.py
index 32bdb8268..c04e38f02 100644
--- a/src/mailman/mta/postfix.py
+++ b/src/mailman/mta/postfix.py
@@ -17,7 +17,7 @@
 
 """Creation/deletion hooks for the Postfix MTA."""
 
-from __future__ import absolute_import, unicode_literals
+from __future__ import absolute_import, print_function, unicode_literals
 
 __metaclass__ = type
 __all__ = [
@@ -31,7 +31,7 @@ import logging
 from flufl.lock import Lock
 from operator import attrgetter
 from zope.component import getUtility
-from zope.interface import implements
+from zope.interface import implementer
 
 from mailman.config import config
 from mailman.interfaces.listmanager import IListManager
@@ -55,11 +55,10 @@ class _FakeList:
 
 
 
+@implementer(IMailTransportAgentLifecycle)
 class LMTP:
     """Connect Mailman to Postfix via LMTP."""
 
-    implements(IMailTransportAgentLifecycle)
-
     def create(self, mlist):
         """See `IMailTransportAgentLifecycle`."""
         # We can ignore the mlist argument because for LMTP delivery, we just
@@ -117,23 +116,24 @@ class LMTP:
         for list_name, mail_host in list_manager.name_components:
             mlist = _FakeList(list_name, mail_host)
             by_domain.setdefault(mlist.mail_host, []).append(mlist)
-        print >> fp, """\
+        print("""\
 # AUTOMATICALLY GENERATED BY MAILMAN ON {0}
 #
 # This file is generated by Mailman, and is kept in sync with the binary hash
 # file.  YOU SHOULD NOT MANUALLY EDIT THIS FILE unless you know what you're
 # doing, and can keep the two files properly in sync.  If you screw it up,
 # you're on your own.
-""".format(now().replace(microsecond=0))
+""".format(now().replace(microsecond=0)), file=fp)
         sort_key = attrgetter('list_name')
         for domain in sorted(by_domain):
-            print >> fp, """\
-# Aliases which are visible only in the @{0} domain.""".format(domain)
+            print("""\
+# Aliases which are visible only in the @{0} domain.""".format(domain),
+                file=fp)
             for mlist in sorted(by_domain[domain], key=sort_key):
                 utility = getUtility(IMailTransportAgentAliases)
                 aliases = list(utility.aliases(mlist))
                 width = max(len(alias) for alias in aliases) + 3
-                print >> fp, ALIASTMPL.format(aliases.pop(0), config, width)
+                print(ALIASTMPL.format(aliases.pop(0), config, width), file=fp)
                 for alias in aliases:
-                    print >> fp, ALIASTMPL.format(alias, config, width)
-                print >> fp
+                    print(ALIASTMPL.format(alias, config, width), file=fp)
+                print(file=fp)