why not exec .service

[Tang Ke]

hi guys
I edit the /usr/share/dbus-1/system-services/com.example.Slow.service

[D-BUS Service]
Name=com.example.Slow
Exec=/home/tangke/slow.py
User=root

and the /home/tangke/slow.py file

import gobject
import dbus
import dbus.service
import dbus.glib
import time

class Slow(dbus.service.Object):
     def __init__(self):
         bus = dbus.SystemBus()
         bus_name = dbus.service.BusName("com.example.Slow", bus)

         super(Slow, self).__init__(bus_name, "/Object")

     @dbus.service.method("com.example.Slow")
     def function1(self):
         print 'starting function1'
         time.sleep(5)
         print 'done with function1'
         return 1

     @dbus.service.method("com.example.Slow")
     def function2(self):
         print 'starting function2'
         time.sleep(5)
         print 'done with function2'
         return 2

     @dbus.service.method("com.example.Slow")
     def function3(self):
         print 'starting function3'
         time.sleep(5)
         print 'done with function3'
         return 3


if __name__ == "__main__":
     gobject.threads_init()
     dbus.glib.init_threads()


when I reboot the machine,and run d-feet not found the com.example.Slow
but when I use the "python /home/tangke/slow.py" and run d-feet will 
found the com.example.Slow


thanks in advance

best regards

tangk at lemote.com