python - 如何随时间过滤对象

Question

假设我有一个简单的 Final 类，我想通过创建的字段过滤过去 2 天的结果，我该怎么做？当我填充最终类时，它有一个 utc 创建时间，但我需要该时间的差异，目前这符合我下面想要完成的操作，但我不确定如何在所有查询中获得差异元素？

class Final(db.Model):
    name = db.StringProperty()
    created = db.DateTimeProperty()

now = datetime.datetime.now()
##d = now - created
##if d.days > 2:
    ## I could loop along something like this but that would be too slow


results = Final.all()
results.filter('created =',##what do i do here?) ##would created >, and then now - 2days work?

Answer 1

我会尝试:

results.filter('created > ', now - datetime.timedelta(days=2))