>>> client.service.GetAppointments(MessageId="asd", SoftwareId="bb", AppointmentQuery=x)Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/am/tg2env/lib/python2.6/site-packages/suds-0.4-py2.6.egg/suds/client.py", line 542, in __call__ return client.invoke(args, kwargs) File "/home/am/tg2env/lib/python2.6/site-packages/suds-0.4-py2.6.egg/suds/client.py", line 603, in invoke result = self.send(soapenv) File "/home/am/tg2env/lib/python2.6/site-packages/suds-0.4-py2.6.egg/suds/client.py", line 643, in send f.write(request)TypeError: argument 1 must be string or read-only character buffer, not instance