guide Introduction Asynchronous and non-Blocking I/O Coroutines Queue example - a concurrent web spider Structure of a Tornado web application Templates and UI Authentication and security Running and deploying functions Parallelism Interleaving Looping Running in the background Queue example - a concurrent web spider Structure of a Tornado web application The main coroutine The Application object Subclassing RequestHandler ticking. await nxt # Wait for the timer to run out.Queue example - a concurrent web spider Tornado’s tornado.queues module (and the very similar Queue classes in asyncio [https://docs.python

clock is ticking. await nxt # Wait for the timer to run out. 6.1.4 Queue example - a concurrent web spider Tornado’s tornado.queues module (and the very similar Queue classes in asyncio) implements an asynchronous unfinished tasks, which begins at zero. put increments the count; task_done decrements it. In the web-spider example here, the queue begins containing only base_url. When a worker fetches a page it parses the