Mastering Flask Web Development - Second Edition

Tornado

Tornado is another very simple way to deploy WSGI apps purely with Python. Tornado is a web server that is designed to handle thousands of simultaneous connections. If your application needs real-time data, Tornado also supports WebSockets for continuous, long-lived connections to the server.

Do not use Tornado in production on a Windows server. The Windows version of Tornado is not only slower—it is also considered beta-stage quality software.

To use Tornado with our application, we will use Tornado's WSGIContainer in order to wrap the application object to make it Tornado-compatible. Then, Tornado will start to listen on port 80 for requests until the process is terminated. In a new file, named tserver.py, add the following: