code: def tzname(self):
          
          if self._tzinfo is None:
              return None
          name = self._tzinfo.tzname(None)
          _check_tzname(name)
          return name
docs: Return the timezone name.
  
          Note that the name is 100% informational -- there's no requirement that
          it mean anything in particular. For example, "GMT", "UTC", "-500",
          "-5:00", "EDT", "US/Eastern", "America/New York" are all valid replies.