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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_active_schedulings(self):
 """Return EighthScheduledActivity's of this activity since the beginning of the year."""

        blocks = EighthBlock.objects.get_blocks_this_year()
        scheduled_activities = EighthScheduledActivity.objects.filter(activity=self)
        scheduled_activities = scheduled_activities.filter(block__in=blocks)

        return scheduled_activities