# -*- coding: utf-8 -*-from __future__ import unicode_literalsimport datetimeZERO = datetime.timedelta(0)class UTC (datetime.tzinfo):def utcoffset(self, dt):return ZEROdef dst(self, dt):return ZEROdef tzname(self, dt):return 'UTC'utc = UTC()mac_epoch = datetime.datetime(1904,1,1,0,0,0,0,utc)unix_epoch = datetime.datetime(1970,1,1,0,0,0,0,utc)osx_epoch = datetime.datetime(2001,1,1,0,0,0,0,utc)