NO-JIRA - Reduce the visibility of the type PyObject


git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1611777 13f79535-47bb-0310-9956-ffa450edef68
NO-JIRA - Removed usage of 'assertIn' which in unavailable prior to Python 2.7.


git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1611782 13f79535-47bb-0310-9956-ffa450edef68