Synnefo

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from datetime import timedelta, tzinfo

import dateutil.parser

class UTC(tzinfo):

    """

    Helper UTC time information object.

    """

    def utcoffset(self, dt):

        return timedelta(0)

    def tzname(self, dt):

        return 'UTC'

    def dst(self, dt):

        return timedelta(0)

def isoformat(d):

    """

    Return an ISO8601 date string that includes a timezone.

    >>> from datetime import datetime

    >>> d = datetime(2012, 8, 10, 00, 59, 59)

    >>> isoformat(d)

    '2012-08-10T00:59:59+00:00'

    """

    return d.replace(tzinfo=UTC()).isoformat()

def isoparse(s):

    """

    Parse an ISO8601 date string into a datetime object.

    >>> isoparse('2012-08-10T00:59:59+00:00')

    datetime.datetime(2012, 8, 10, 0, 59, 59)

    """

    since = dateutil.parser.parse(s)

    utc_since = since.astimezone(UTC()).replace(tzinfo=None)

    return utc_since