def get_local(self, key, default=None, scope=None):
        """
        Retrieve some data previously set via :meth:`set_local`.

        In Python, this is equivalent to::

            relation.conversation(scope).get_local(key, default)

        See :meth:`conversation` and :meth:`Conversation.get_local`.
        """
        return self.conversation(scope).get_local(key, default)