Sanic is a Python web framework built on uvloop and created specifically for fast HTTP responses Tornado is a Python web framework and asynchronous networking library. It uses a non-blocking. What we have done is built a fully-functioning command-line chatroom. You can run your server script by giving it any of your machine’s IP interfaces (you can also use your hostname!). If you like, you can just use ‘127.0.0.1’ or ‘localhost’ if you are only going to be testing this on one machine.