这样的事情将为你工作:
from datetime import datetime, timedeltahow_many_days = 30MyObject.objects.filter(entered__gte=datetime.now()-timedelta(days=how_many_days))

这样的事情将为你工作:
from datetime import datetime, timedeltahow_many_days = 30MyObject.objects.filter(entered__gte=datetime.now()-timedelta(days=how_many_days))