python - Filtering on month value doesn't return objects -

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i have newsitem object in datebase. want filter newsitem objects based on year , month values. first of all, here model:

class newsitem(models.model):     maintitle = models.charfield(max_length=500)     publish_start = models.datetimefield()

when call object on shell, output is:

in[15]: nitem[0].publish_start out[15]: datetime.datetime(2015, 7, 27, 10, 57, 50, tzinfo=<utc>)

the problem is, when filter newsitem objects based on month, can't object. filtering on year works fine.

newsitem.objects.all().filter(publish_start__year=2015)

returns object but

newsitem.objects.all().filter(publish_start__month=7)

or

newsitem.objects.all().filter(publish_start__day=27)

doesn't returns object.

according django docs, if use use_tz = true, datetime objects converted current time zone. filtering on timezone aware objects requires time zone definitions in database.


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