code: def get_path(self, tile):
          
          return os.path.join(*[
              self.path,
              str(tile.zoom),
              str(tile.row),
              str(tile.col) + self.file_extension
          ])
docs: Determine target file path.
  
          Parameters
          ----------
          tile : ``BufferedTile``
              must be member of output ``TilePyramid``
  
          Returns
          -------
          path : string