import buildbot.status.client
     pbl = buildbot.status.client.PBListener(port=int, user=str,
                                             passwd=str)
     c['status'].append(pbl)
   This sets up a PB listener on the given TCP port, to which a PB-based
status client can connect and retrieve status information. 
buildbot statusgui (see statusgui) is an example of such a
status client. The port argument can also be a strports
specification string.