This tutorial is a quick one showing you how to load a python program into the boot up file. This means that it will run when the Raspberry Pi is switched on.
1. In the terminal, open up the file using the command below
$ - sudo nano /etc/rc.local
2. At the very bottom of the file, just above 'exit 0' enter a command along the lines of:
$ - sudo python2 /home/pi/my_program.py
3. Note that the file must have the full path name.