root/StormSiren/CapTimezone.py

from datetime import tzinfo, timedelta, datetime
import string

class CapTimezone(tzinfo):
        def __init__(self):
                self.__offset = 0
                self.__sign = '+'

        def setOffset(self,offset):
                self.__offset = offset
                self.__adjust_sign()

        def __adjust_sign(self):
                if(self.__sign == '-'):
                        self.__offset *= -1

        def setSign(self,sign):
                self.__sign = sign
                self.__adjust_sign()

        def utcoffset(self, dt):
                return timedelta(hours=self.__offset)

        def tzname(self, dt):
                return "%s%2i:00" % (self.__sign,self.__offset)

        def dst(self, dt):
                return timedelta(hours=self.__offset)

        def __str__(self):
                str = "CapTimezone:\n"
                str += "\tSign: %s\n" % self.__sign
                str += "\tOffset: %i\n" % self.__offset
                return str

        def display(self):
                print self.__str__()