import dbus
import gobject

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

bus = dbus.SystemBus()

usage_obj = bus.get_object('org.freesmartphone.ousaged', '/org/freesmartphone/Usage')
usage_iface = dbus.Interface(usage_obj, 'org.freesmartphone.Usage')

print(usage_obj.ListResources())
usage_obj.RequestResource("GSM")