tornado: tornado (web framework and asynchronous networking library) tornado: tornado: Tornado is a Python web framework and asynchronous networking library tornado: originally developed at FriendFeed. By using non-blocking network I/O tornado: Tornado can scale to tens of thousands of open connections, making it tornado: ideal for long polling, WebSockets, and other applications that tornado: require a long-lived connection to each user. tornado: tornado: tornado: tornado: