Trouble installing Heroku Scheduler in Python?

Question

Python

I need to deploy a Python script that runs from time to time on Heroku
. I follow this manual:
https://devcenter.heroku.com/articles/scheduler
I hit the Defining tasks item almost immediately. An example is given for Ruby only.
What would bin/clean-sessions look like for Python given that no database is used?
And where is this bin/clean-sessions stored? in a virtual environment?