To make sure the dependencies are installed, used poetry

$ poetry install

Then, you can drop into a poetry shell with

$ poetry shell

and work as normal, e.g.

$ python tests/run_it.py

When running locally, beoremote_hass_bridge will respect a .env file; make sure you have

HA_WS_API=wss://wherever.ha-is.com/api/websocket
HA_AUTH_TOKEN=token

set.