and various supporting classes). • Client- and server-side implementions of HTTP (HTTPServer and AsyncHTTPClient). • An asynchronous networking library including the classes IOLoop and IOStream, which Queue example - a concurrent web spider Tornado’s tornado.queues module (and the very similar Queue classes in asyncio) implements an asynchronous producer / consumer pattern for coroutines, analogous to the get()/post()/etc, certain other methods in RequestHandler are designed to be overridden by sub- classes when necessary. On every request, the following sequence of calls takes place: 1. A new RequestHandler

and security Running and deploying Web framework tornado.web — RequestHandler and Application classes tornado.template — Flexible output generation tornado.routing — Basic routing implementation tornado applications, and various supporting classes). Client- and server-side implementions of HTTP (HTTPServer and AsyncHTTPClient). An asynchronous networking library including the classes IOLoop and IOStream, which Queue example - a concurrent web spider Tornado’s tornado.queues module (and the very similar Queue classes in asyncio [https://docs.python.org/3/library/asyncio.html#module-asyncio]) implements an asynchronous