Thanks for your reply.
How can i run the xbmc.executeJSONRPC command? I have tried to import xbmc like described in your howto, but get a error:
osmc@osmc:~/.kodi/userdata$ python test.py
Traceback (most recent call last):
File "test.py", line 3, in <module>
import xbmc
ImportError: No module named xbmc