def tz(self):
        """Return the timezone. If none is set use system timezone"""
        if not self._tz:
            self._tz = tzlocal.get_localzone().zone
        return self._tz
def tz(self):
        """Return the timezone. If none is set use system timezone"""
        if not self._tz:
            self._tz = tzlocal.get_localzone().zone
        return self._tz
def tz ( self ) : if not self . _tz : self . _tz = tzlocal . get_localzone ( ) . zone return self . _tz
Return the timezone. If none is set use system timezone
Return the timezone . If none is set use system timezone