mylar/lib/apscheduler/triggers/base.py

20 lines
578 B
Python

from abc import ABCMeta, abstractmethod
import six
class BaseTrigger(six.with_metaclass(ABCMeta)):
"""Abstract base class that defines the interface that every trigger must implement."""
__slots__ = ()
@abstractmethod
def get_next_fire_time(self, previous_fire_time, now):
"""
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
"""