i am trying to get my WS2812 NeoPixel python sketch to run at boot, i used a tutorial <https://tutorials-raspberrypi.com/connect-control-raspberry-pi-ws2812-rgb-led-strips/> it install the correct files and such and all works fine when i run the commands in terminal the lights do as they are meant to, an just trying to figure out how to make them start on boot, i am still really new to all of this 

```
the 3 commands i use to run the python script as follow 

cd rpi_ws281x/

cd python

sudo PYTHONPATH=".:build/lib.linux-armv7l-2.7" python examples/strandtest.py

```

any help would be much approached

i have tried following a tutorial on hear explaining what to do and it always comes back with an error file or directory not found