datatracker/ietf/utils/timezone.py
2012-09-17 15:51:33 +00:00

38 lines
1,021 B
Python

import pytz
import email.utils
import datetime
from django.conf import settings
def local_timezone_to_utc(d):
"""Takes a naive datetime in the local timezone and returns a
naive datetime with the corresponding UTC time."""
local_timezone = pytz.timezone(settings.TIME_ZONE)
d = local_timezone.localize(d).astimezone(pytz.utc)
return d.replace(tzinfo=None)
def utc_to_local_timezone(d):
"""Takes a naive datetime UTC and returns a naive datetime in the
local time zone."""
local_timezone = pytz.timezone(settings.TIME_ZONE)
d = local_timezone.normalize(d.replace(tzinfo=pytz.utc).astimezone(local_timezone))
return d.replace(tzinfo=None)
def email_time_to_local_timezone(date_string):
"""Takes a time string from an email and returns a naive datetime
in the local time zone."""
t = email.utils.parsedate_tz(date_string)
d = datetime.datetime(*t[:6])
if t[7] != None:
d += datetime.timedelta(seconds=t[9])
return utc_to_local_timezone(d)