Here's a sample application for using DCOP with Python. Needed to install python-dcop on Debian. It works on KDE 3.5 with Amarok 1.4 (won't work on KDE 4)
import pydcop playerService = pydcop.DCOPObject('amarok', 'player') d = dict( title=playerService.title(), artist=playerService.artist(), album=playerService.album() ) print '%(artist)s - %(title)s (%(album)s)' % d
kdcop is a great application to discover DCOP services.
I've posted a slightly extended version of this entry to Active State Python Cookbook.