a dK@sFddlmZmZddlmZddlZddlZGdddeeZdS))ABCMetaabstractmethod) timedeltaNc@s(eZdZdZdZeddZddZdS) BaseTriggerzQAbstract base class that defines the interface that every trigger must implement.cCsdS)a  Returns the next datetime to fire on, If no such datetime can be calculated, returns ``None``. :param datetime.datetime previous_fire_time: the previous time the trigger was fired :param datetime.datetime now: current datetime Nr)selfZprevious_fire_timenowrrU/var/www/html/django/DPS/env/lib/python3.9/site-packages/apscheduler/triggers/base.pyget_next_fire_time szBaseTrigger.get_next_fire_timecCs&|dus |s|S|ttd|dS)a Randomize ``next_fire_time`` by adding a random value (the jitter). :param datetime.datetime|None next_fire_time: next fire time without jitter applied. If ``None``, returns ``None``. :param int|None jitter: maximum number of seconds to add to ``next_fire_time`` (if ``None`` or ``0``, returns ``next_fire_time``) :param datetime.datetime now: current datetime :return datetime.datetime|None: next fire time with a jitter. Nr)seconds)rrandomuniform)rZnext_fire_timejitterrrrr _apply_jitters zBaseTrigger._apply_jitterN)__name__ __module__ __qualname____doc__ __slots__rr rrrrr rs  r) abcrrdatetimerr sixwith_metaclassrrrrr s