schedulers.py 文件源码

def to_model_schedule(cls, schedule):
        for schedule_type, model_type, model_field in cls.model_schedules:
            schedule = schedules.maybe_schedule(schedule)
            if isinstance(schedule, schedule_type):
                model_schedule = model_type.from_schedule(schedule)
                return model_schedule, model_field

        raise ValueError(
            'Cannot convert schedule type {0!r} to model'.format(schedule)
        )