time]. class tornado.ioloop.PeriodicCallback(callback: Callable[[], None], callback_time: float, jitter: float = 0)[source] Schedules the given callback to be called periodically. The callback is called functions in Tornado use seconds. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events events with similar periods. A jitter of 0.1 means allowing a 10% variation in callback time. The window is centered on callback_time so the total number of calls within a given interval should not be

time]. class tornado.ioloop.PeriodicCallback(callback: Callable[[], None], callback_time: float, jitter: float = 0)[source] Schedules the given callback to be called periodically. The callback is called functions in Tornado use seconds. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events events with similar periods. A jitter of 0.1 means allowing a 10% variation in callback time. The window is centered on callback_time so the total number of calls within a given interval should not be

matter what time function is chosen. class tornado.ioloop.PeriodicCallback(callback, callback_time, jitter=0) Schedules the given callback to be called periodically. The callback is called every callback_time functions in Tornado use seconds. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events events with similar periods. A jitter of 0.1 means allowing a 10% variation in callback time. The window is centered on callback_time so the total number of calls within a given interval should not be

matter what time function is chosen. class tornado.ioloop.PeriodicCallback(callback, callback_time, jitter=0) Schedules the given callback to be called periodically. The callback is called every callback_time functions in Tornado use seconds. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events events with similar periods. A jitter of 0.1 means allowing a 10% variation in callback time. The window is centered on callback_time so the total number of calls within a given interval should not be

functions in Tornado use seconds. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events events with similar periods. A jitter of 0.1 means allowing a 10% variation in callback time. The window is centered on callback_time so the total number of calls within a given interval should not be be significantly affected by adding jitter. If the callback runs for longer than callback_time milliseconds, subsequent invocations will be skipped to get back on schedule. start must be called after the

functions in Tornado use seconds. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events events with similar periods. A jitter of 0.1 means allowing a 10% variation in callback time. The window is centered on callback_time so the total number of calls within a given interval should not be be significantly affected by adding jitter. If the callback runs for longer than callback_time milliseconds, subsequent invocations will be skipped to get back on schedule. start must be called after the

PeriodicCallback(callback: Callable[[], Optional[Awaitable]], callback_time: Union[timedelta, float], jitter: float = 0) Schedules the given callback to be called periodically. The callback is called every as a datetime.timedelta object. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events the total number of calls within a given interval should not be significantly affected by adding jitter. If the callback runs for longer than callback_time milliseconds, subsequent invocations will be

PeriodicCallback(callback: Callable[[], Optional[Awaitable]], callback_time: Union[timedelta, float], jitter: float = 0) Schedules the given callback to be called periodically. The callback is called every as a datetime.timedelta object. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events the total number of calls within a given interval should not be significantly affected by adding jitter. If the callback runs for longer than callback_time milliseconds, subsequent invocations will be

PeriodicCallback(callback: Callable[[], Optional[Awaitable]], callback_time: Union[timedelta, float], jitter: float = 0) Schedules the given callback to be called periodically. The callback is called every as a datetime.timedelta object. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events the total number of calls within a given interval should not be significantly affected by adding jitter. If the callback runs for longer than callback_time milliseconds, subsequent invocations will be

PeriodicCallback(callback: Callable[[], Optional[Awaitable]], callback_time: Union[timedelta, float], jitter: float = 0) Schedules the given callback to be called periodically. The callback is called every as a datetime.timedelta object. If jitter is specified, each callback time will be randomly selected within a window of jitter * callback_time milliseconds. Jitter can be used to reduce alignment of events the total number of calls within a given interval should not be significantly affected by adding jitter. If the callback runs for longer than callback_time milliseconds, subsequent invocations will be