…Nðh-ã@saddlmZmZddlmZddlZddlZGdd„dejeƒƒZdS)é)ÚABCMetaÚabstractmethod)Ú timedeltaNc@s:eZdZdZfZedd„ƒZdd„ZdS)Ú 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 N©)ÚselfZprevious_fire_timeÚnowrrúU/mod/web/acousticsspace/venv/lib/python3.5/site-packages/apscheduler/triggers/base.pyÚget_next_fire_time szBaseTrigger.get_next_fire_timecCsK|dks| r|S|tdtj| |ƒƒ}||krG|S|S)a¾ Randomize ``next_fire_time`` by adding or subtracting a random value (the jitter). If the resulting datetime is in the past, returns the initial ``next_fire_time`` without jitter. ``next_fire_time - jitter <= result <= next_fire_time + 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 or subtract 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. NÚseconds)rÚrandomÚuniform)rZnext_fire_timeÚjitterrZnext_fire_time_with_jitterrrr Ú _apply_jitters  zBaseTrigger._apply_jitterN)Ú__name__Ú __module__Ú __qualname__Ú__doc__Ú __slots__rr rrrrr rs  r) ÚabcrrÚdatetimerr ÚsixÚwith_metaclassrrrrr Ús