Start the clock. await do_something() # Run while the 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 implements Changed in version 5.1: The jitter argument is added. start() → None Starts the timer. stop() → None Stops the timer. 6.4. Asynchronous networking 101 Tornado Documentation, Release 6.1 is_running() Etag headers are now generated with SHA-512 instead of MD5. tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

Start the clock. await do_something() # Run while the 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 objects, in addition to the previous numeric milliseconds. start() → None Starts the timer. stop() → None Stops the timer. is_running() → bool Returns True if this PeriodicCallback has been started. New Chapter 6. Documentation Tornado Documentation, Release 6.4 tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

Start the clock. await do_something() # Run while the 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 objects, in addition to the previous numeric milliseconds. start() → None Starts the timer. stop() → None Stops the timer. is_running() → bool Returns True if this PeriodicCallback has been started. New Etag headers are now generated with SHA-512 instead of MD5. tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

Start the clock. await do_something() # Run while the 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 objects, in addition to the previous numeric milliseconds. start() → None Starts the timer. stop() → None Stops the timer. is_running() → bool Returns True if this PeriodicCallback has been started. New Chapter 6. Documentation Tornado Documentation, Release 6.4 tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

Start the clock. await do_something() # Run while the 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 objects, in addition to the previous numeric milliseconds. start() → None Starts the timer. stop() → None Stops the timer. is_running() → bool Returns True if this PeriodicCallback has been started. New Chapter 6. Documentation Tornado Documentation, Release 6.4 tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

Start the clock. await do_something() # Run while the 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 objects, in addition to the previous numeric milliseconds. start() → None Starts the timer. stop() → None Stops the timer. is_running() → bool Returns True if this PeriodicCallback has been started. New Etag headers are now generated with SHA-512 instead of MD5. tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

Start the clock. await do_something() # Run while the 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 objects, in addition to the previous numeric milliseconds. start() → None Starts the timer. stop() → None Stops the timer. is_running() → bool Returns True if this PeriodicCallback has been started. Added Etag headers are now generated with SHA-512 instead of MD5. tornado.websocket • The ping_interval timer is now stopped when the connection is closed. • websocket_connect now raises an error when it encounters

await do_something() # Run while the clock is ticking. await nxt # Wait for the timer to run out. Queue example - a concurrent web spider Tornado’s tornado.queues module (and the very python.org/3/library/constants.html#None] Starts the timer. stop() → None [https://docs.python.org/3/library/constants.html#None] Stops the timer. is_running() → bool [https://docs.python.org/3/library/functions Etag headers are now generated with SHA-512 instead of MD5. tornado.websocket The ping_interval timer is now stopped when the connection is closed. websocket_connect now raises an error when it encounters

yield do_something() # Run while the clock is ticking. yield nxt # Wait for the timer to run out. Queue example - a concurrent web spider Tornado’s tornado.queues module implements an created. Changed in version 4.1: The io_loop argument is deprecated. start() Starts the timer. stop() Stops the timer. is_running() Return True if this PeriodicCallback has been started. New in version

Start the clock. yield do_something() # Run while the clock is ticking. yield nxt # Wait for the timer to run out. 4.1.4 Queue example - a concurrent web spider Tornado’s tornado.queues module implements created. Changed in version 4.1: The io_loop argument is deprecated. start() Starts the timer. stop() Stops the timer. is_running() Return True if this PeriodicCallback has been started. New in version