python datetime compare

时间间隔timedelta可用于计算/比较

可以直接用timedelta( days=1 )来进行日期的计算，大小判断

from datetime import timedelta
start_date = timezone.now().date()
end_date = start_date + timedelta( days=1 ) 
Entry.objects.filter(created__range=(start_date, end_date))

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