code: def _time_from_iso8601_time_naive(value):
      
      if len(value) == 8:  # HH:MM:SS
          fmt = _TIMEONLY_NO_FRACTION
      elif len(value) == 15:  # HH:MM:SS.micros
          fmt = _TIMEONLY_W_MICROS
      else:
          raise ValueError("Unknown time format: {}".format(value))
      return datetime.datetime.strptime(value, fmt).time()
docs: Convert a zoneless ISO8601 time string to naive datetime time
  
      :type value: str
      :param value: The time string to convert
  
      :rtype: :class:`datetime.time`
      :returns: A datetime time object created from the string
      :raises ValueError: if the value does not match a known format.