On the Getting Started page it says that something like this might be a typical invocation for a station server (for python files)

./station-server.py Greenwood-Stn 2402 2560 host4:2567 host1:2408 .... &

To get a python script to run like this we would need a #!/bin/python3 at the top of the file and for it to be executable. Is it fair to assume that this is where the python interpreter will be when marking, is there another way?

Use #!/usr/bin/env python3