When running Python scripts, how to you set which version of Python is being used?

[afelix]

Turns out it is hardcoded for this node.

erfanjahanshahlo/node-red-contrib-pifacecad/blob/8457ae3afbcb844e80a3d3cf8d5df5bca698f398/pfc_lcd.js#L8

This line tells you it will use Python 2.x, likely 2.7 which has been End Of Life since January 1st.

As such, the instructions for installing dependencies are odd:

For install dependencies, in your raspberry pi terminal run the below command.

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install python{,3}-pifacecad

That last line will install the pifacecad python library for both python2 and python3, yet hardcoded uses python2.