def parse_date(date_string, format_, as_utc=True):
"""
Return a datetime corresponding to date_string, parsed according to format.
For example, to re-display a date string in another format::
{{ "01/01/1970"|parse_date:"%m/%d/%Y"|date:"F jS, Y" }}
"""
try:
parsed_dt = datetime.datetime.strptime(date_string, format_)
return DateUtils.as_utc(parsed_dt) if as_utc else parsed_dt
except ValueError:
pass
def test_as_utc(self):
# convert from naive to UTC
naive = datetime.datetime(2002, 10, 27, 1, 30)
in_utc = DateUtils.as_utc(naive)
self.assertEqual(in_utc.strftime(self.fmt),
'2002-10-27 01:30:00 UTC+0000')
# convert from UTC to UTC (nothing changed)
in_utc = datetime.datetime(2002, 10, 27, 1, 30, tzinfo=pytz.UTC)
self.assertEqual(in_utc.strftime(self.fmt),
'2002-10-27 01:30:00 UTC+0000')
in_utc = DateUtils.as_utc(in_utc)
self.assertEqual(in_utc.strftime(self.fmt),
'2002-10-27 01:30:00 UTC+0000')
# hard-replace from localized to UTC (simply ignore original tz)
in_eastern = self.eastern.localize(
datetime.datetime(2002, 10, 27, 1, 30))
self.assertEqual(in_eastern.strftime(self.fmt),
'2002-10-27 01:30:00 EST-0500')
in_utc = DateUtils.as_utc(in_eastern)
self.assertEqual(in_utc.strftime(self.fmt),
'2002-10-27 01:30:00 UTC+0000')
