Add a python script to startup

Im rather new to linux, and this was the first time ever that i had to get a python script running at boot, and with root privileges.
Have to say it was rather straight forward. Nothing special for python, just had to add a line of code in

/etc/local.rc

Just opened it in nano:

sudo nano /etc/local.rc

 
and added to the file:

sudo python /home/pi/turn.py