如何比较 Django 中的日期时间? [英] How to compare datetime in Django?

问题描述

假设我有:

ds = datetime.datetime.nowdd = Entry.objects.get(pk=id).pub_date

如何比较上面的2个对象?我想得到它们之间的时差.请帮我解决这个问题.非常感谢！

解决方案

我假设 pub_date 是一个 django.db.models.DateField，这意味着你可以将其视为 datetime.date 对象.

如果您将它们转换为相同类型(datetime.datetime 或 datetime.date)并从另一个中减去一个，您将获得一个 datetime.timedelta.

当您使用 datetime.datetime.now() 时，如果您的 pub_date 只是一个日期而不是日期时间，您不妨使用 ds= datetime.date.today() 代替:

<预><代码>>>>ds = datetime.date.today()>>>dd = datetime.date(2009, 12, 9)>>>ds - dddatetime.timedelta(2) # 2 天前

Suppose I have:

ds = datetime.datetime.now
dd = Entry.objects.get(pk=id).pub_date

How to compare 2 objects above? I want to get the time difference between them. Please help me solve this problem. Thank you very much !

解决方案

I am assuming that pub_date is a django.db.models.DateField, which means you can treat it as a datetime.date object.

If you convert them to the same type (either datetime.datetime or datetime.date) and subtract one from the other, you will get an instance of datetime.timedelta.

As you are using datetime.datetime.now(), if your pub_date is simply a date rather than a datetime, you may as well use ds = datetime.date.today() instead:

>>> ds = datetime.date.today()
>>> dd = datetime.date(2009, 12, 9)
>>> ds - dd
datetime.timedelta(2) # 2 days ago

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