Of all the example projects on the rethinkdb site (https://www.rethinkdb.com/docs/examples/) the only one that showed a good use case of changefeeds was the CatThink project (https://www.rethinkdb.com/blog/cats-of-instagram/) which was written in JavaScript. There are some good example python projects but no one is using a changefeed in the python projects. I wanted to see if I could make a nice chat app with python socket-io and of course rethinkdb. This is the result.
The project has been set up to work with docker/docker-compose so in order to run the project just run docker-compose build then docker-compose up. You will notice an error from the web container. Just open a shell in the container and open up the python terminal from there and run: from main import init_db and then init_db(). Restart the containers and then you should be good to go!
Demo:
