how_do_i_timezone.py

import dateutil.parser, datetime, pytz

def printy(thing):
    print repr(thing)

x = datetime.datetime.utcnow()
printy(x)
x = pytz.utc.localize(x)
printy(x)
x = x.isoformat()
printy(x)
x = dateutil.parser.parse(x)
printy(x)
x = x.isoformat()
printy(x)

print "\n\n"

x = datetime.datetime.now()
printy(x)
x = pytz.timezone('Europe/London').localize(x)
printy(x)
x = x.isoformat()
printy(x)
x = dateutil.parser.parse(x)
printy(x)
x = x.isoformat()
printy(x)

print "\n\n"

x = datetime.datetime.now()
printy(x)
x = pytz.timezone('US/Hawaii').localize(x)
printy(x)
x = x.isoformat()
printy(x)
x = dateutil.parser.parse(x)
printy(x)
x = x.isoformat()
printy(x)

output.txt

datetime.datetime(2016, 9, 5, 14, 24, 4, 135526)
datetime.datetime(2016, 9, 5, 14, 24, 4, 135526, tzinfo=<UTC>)
'2016-09-05T14:24:04.135526+00:00'
datetime.datetime(2016, 9, 5, 14, 24, 4, 135526, tzinfo=tzutc())
'2016-09-05T14:24:04.135526+00:00'



datetime.datetime(2016, 9, 5, 15, 24, 4, 136024)
datetime.datetime(2016, 9, 5, 15, 24, 4, 136024, tzinfo=<DstTzInfo 'Europe/London' BST+1:00:00 DST>)
'2016-09-05T15:24:04.136024+01:00'
datetime.datetime(2016, 9, 5, 15, 24, 4, 136024, tzinfo=tzoffset(None, 3600))
'2016-09-05T15:24:04.136024+01:00'



datetime.datetime(2016, 9, 5, 15, 24, 4, 151031)
datetime.datetime(2016, 9, 5, 15, 24, 4, 151031, tzinfo=<DstTzInfo 'US/Hawaii' HST-1 day, 14:00:00 STD>)
'2016-09-05T15:24:04.151031-10:00'
datetime.datetime(2016, 9, 5, 15, 24, 4, 151031, tzinfo=tzoffset(None, -36000))
'2016-09-05T15:24:04.151031-10:00'