1 files changed, 5 insertions, 2 deletions

diff --git a/src/mailman/interfaces/database.py b/src/mailman/interfaces/database.py
index 0530f83b9..040bce77c 100644
--- a/src/mailman/interfaces/database.py
+++ b/src/mailman/interfaces/database.py
@@ -17,7 +17,7 @@
 
 """Interfaces for database interaction."""
 
-from __future__ import absolute_import, unicode_literals
+from __future__ import absolute_import, print_function, unicode_literals
 
 __metaclass__ = type
 __all__ = [
@@ -26,7 +26,7 @@ __all__ = [
     ]
 
 
-from zope.interface import Interface
+from zope.interface import Attribute, Interface
 
 from mailman.interfaces.errors import MailmanError
 
@@ -63,3 +63,6 @@ class IDatabase(Interface):
 
     def abort():
         """Abort the current transaction."""
+
+    store = Attribute(
+        """The underlying Storm store on which you can do queries.""")