'Time zone of this machine; e.g. \'EST\' or \'MDT\'.
If timezone information is not available, return an empty string.'

def T(self):

    if (not self.timezone):
        return ''
    name = None
    with suppress(Exception):
        name = self.timezone.tzname(self.data)
    if (name is None):
        name = self.format('O')
    return str(name)
