Python script to dummy device

[no0b]

Hi all,
totall rookie to all this but doing my best to learn and need some advice on how to go forward.
Am trying to connect my Lifx bulbs to a dummy switch (which will later on be switched to a KAKU switch). So far I managed to piece together a short python script to turn on and off my bulbs. However I have no clue how to run the script from domoticz. I tried creating a dummy (x10?) and added the script as
script://home/pi/testing/on.py

I get no error message in the log but als nothing happens. When running the script from putty it does work.
Any ideas where I am going wrong? Probably missed something obvious...

Thanks!

[no0b]

some more info...

python script has been made executable and looks like follow...

#!/usr/bin/env python

from lifxlan import Light
light = Light("mac","ip")
light.set_power("on")

Really don't get where I'm going wrong as script works outside domoticz