On the computer you want to run on, install Processing: https://processing.org/download/?processing Select "Linux 64-bit". This will download a tar archived directory.
Open up a terminal. In the directory with the tar file you downloaded above (should be named something like processing-3.0.1-linux64.tgz) run the following command:
tar -zxvf processing-3.0.1-linux64.tgz replacing that filename with whatever the name actually is.
The last step should have made a directory named process-3.0.1 (or something similar). cd into that directory and run ./processing. In the upper right, it will say "Java". Click on this, click a button that says something like "Install other modes", and select python.
I've included a basic python file called start.py. Try opening this in Processing studio. It might give you some error message, just click okay. Eventually, when you run it, a window should pop that that has some geometric drawings in it. Good job! You've install Processing with python mode.
A full list of Python functions for Processing is available here: http://py.processing.org/reference/