I have a date time of my django object but it can be any time of the day. It can be at any time through the day, but I need to set my time to 00:00:00 (and another date to 23:59:59 but the principle will be the same)
end_date = lastItem.pub_date currently the end date is 2002-01-11 12:34:56 What do I need to do to get this to change it to 00:00:00?
i tried:
end_date.hour = '00' but got: 'datetime.datetime' object attribute 'time' is read-only
Using datetimes's "combine" with the time.min and time.max will give both of your datetimes. For example:
from datetime import date, datetime, time pub_date = date.today() min_pub_date_time = datetime.combine(pub_date, time.min) max_pub_date_time = datetime.combine(pub_date, time.max) Result with pub_date of 2013-06-05:
min_pub_date_time -> datetime.datetime(2013, 6, 5, 0, 0)
max_pub_date_time -> datetime.datetime(2013, 6, 5, 23, 59, 59, 999999)
Try this:
import datetime pub = lastItem.pub_date end_date = datetime.datetime(pub.year, pub.month, pub.day) 
end_date.replace(hour=0, minute=0, second=0).
datetime.datetime.replace() is working fine for me with second and microsecond keyword arguments, make sure that you have a datetime.datetime instance and not a datetime.date.
microsecond in your first comment. 2. .replace() may return an unnormalized value for an aware datetime object that may introduce ~1h error around DST transitions. Both .combine() and datetime() methods strip the timezone info so that you can add the correct value instead of using by accident a possibly incorrect value returned by .replace()Are you sure you don't want to use dates instead of datetimes? If you're always setting the time to midnight, you should consider using a date. If you really want to use datetimes, here's a function to get the same day at midnight:
def set_to_midnight(dt): midnight = datetime.time(0) return datetime.datetime.combine(dt.date(), midnight) 
midnight = datetime.time(23, 59, 59)
datetime.combine(dt.date(), datetime.min.time()) worked for meFor tz-aware dates it should be:
datetime.combine(dt.date(), datetime.min.time(), dt.tzinfo) 
