vArDo

#!/usr/bin/env python
INTERFACE = 'org.gajim.dbus.RemoteInterface'
SIGNAL_NAME = 'NewMessage'

from dbus.mainloop.glib import DBusGMainLoop
DBusGMainLoop(set_as_default=True)

import dbus

bus = dbus.SessionBus()

def dog_barks(data):
    print "Data: %s"%(data)
    print "Dog barks"

bus.add_signal_receiver(dog_barks, signal_name=SIGNAL_NAME,
        dbus_interface=INTERFACE)

import gobject
loop = gobject.MainLoop()
loop.run()