Make a virtual environment with make venv and enter it with source venv/bin/activate.
Twitter credentials should be stored in the environment variables
CONSUMER_KEY, CONSUMER_SECRET, ACCESS_TOKEN and ACCESS_TOKEN_SECRET.
For systemd, these should be in the .env file in the root of this repository, without any export directives.
Data from the API should be saved in data/films.json. It can be retrieved with data/get_films.sh.
Link the unit files to their system locations, then enable the timer.