示例
from datetime import timedelta
fromdjango.utilsimport timezone
frompsycopg2.extrasimport DateTimeTZRange
# To create a "period" object we will use psycopg2's DateTimeTZRange
# which takes the two datetime bounds as arguments
period_start = timezone.now()
period_end = period_start + timedelta(days=1, hours=3)
period = DateTimeTZRange(start, end)
# SayEvent.timeslotis a DateTimeRangeField
# Events which cover at least the whole selected period,
Event.objects.filter(timeslot__contains=period)
# Events which start and end within selected period,
Event.objects.filter(timeslot__contained_by=period)
# Events which, at least partially, take place during the selected period.
Event.objects.filter(timeslot__overlap=period)