如何从DateTimeField中提取年,月,日,小时和分钟?

时间:2012-06-27 01:45:20

标签: python django

我想知道如何从DateTimeField中提取年,月,日,小时和分钟?

我要提取信息的datimefield名为'redemption_date',模型的代码是:

from django.db import models
from datetime import datetime, timedelta
   class Code(models.Model):
        id = models.AutoField(primary_key=True)
        code_key = models.CharField(max_length=20,unique=True)
        redemption_date = models.DateTimeField(null=True, blank=True)
        user = models.ForeignKey(User, blank=True, null=True)

        # ...
        def is_expired(self):
            expired_date = datetime.now() - timedelta( days=2 )
            my_redemtion_date = self.redemption_date
            if self.redemption_date is None:
                return False
            if my_redemtion_date  < expired_date:
                    return True
            else:
                return False

提前致谢!

3 个答案:

答案 0 :(得分:7)

From the datetime documentation

[...]
class datetime.datetime
A combination of a date and a time. Attributes: year, month, day, hour, 
minute, second, microsecond, and tzinfo.
[...]

因此,您可以直接访问redemption_date的属性来提取您想要的信息。

答案 1 :(得分:4)

不要忘记你的第一个信息来源应该是python本身。您可以在导入datetime后输入shell:

dir(datetime)
# even more detail on
help(datetime)

答案 2 :(得分:3)

redemption_date.year
redemption_date.month
etc...