. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: tornado import gen, httpclient, ioloop, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 async def get_links_from_url(url): (continues on next page) 20 Chapter 6. Documentation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: tornado import gen, httpclient, ioloop, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 async def get_links_from_url(url): """Download the page at `url` and parse it for links

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 4.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 4.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: tornado import httpclient, gen, ioloop, queues base_url = 'http://www.tornadoweb.org/en/stable/' concurrency = 10 @gen.coroutine def get_links_from_url(url): """Download the page at `url` and parse it for

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 5.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 5.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: tornado import gen, httpclient, ioloop, queues base_url = 'http://www.tornadoweb.org/en/stable/' concurrency = 10 async def get_links_from_url(url): """Download the page at `url` and parse it for links

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: from tornado import gen, httpclient, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 (continues on next page) 20 Chapter 6. Documentation Tornado Documentation, Release 6.2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: from tornado import gen, httpclient, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 (continues on next page) 20 Chapter 6. DocumentationTornado Documentation, Release 6.5.1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: from tornado import gen, httpclient, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 (continues on next page) 20 Chapter 6. Documentation Tornado Documentation, Release 6.4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: from tornado import gen, httpclient, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 (continues on next page) 20 Chapter 6. Documentation Tornado Documentation, Release 6.4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: from tornado import gen, httpclient, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 (continues on next page) 20 Chapter 6. Documentation Tornado Documentation, Release 6.4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Coroutines and concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 6.6 Integration are almost as simple as synchronous code, but without the expense of a thread. They also make concurrency easier to reason about by reducing the number of places where a context switch can happen. Example: from tornado import gen, httpclient, queues base_url = "http://www.tornadoweb.org/en/stable/" concurrency = 10 (continues on next page) 20 Chapter 6. Documentation Tornado Documentation, Release 6.3