code: def _get_utm_code(zone, direction):
      
      dir_dict = {_Direction.NORTH: '6', _Direction.SOUTH: '7'}
      return '{}{}{}'.format('32', dir_dict[direction], str(zone).zfill(2))
docs: Get UTM code given a zone and direction
  
      Direction is encoded as NORTH=6, SOUTH=7, while zone is the UTM zone number zero-padded.
      For instance, the code 32604 is returned for zone number 4, north direction.
  
      :param zone: UTM zone number
      :type zone: int
      :param direction: Direction enum type
      :type direction: Enum
      :return: UTM code
      :rtype: str