code: def tileSize(self, zoom):
          "Returns the size (in meters) of a tile"
          assert zoom in range(0, len(self.RESOLUTIONS))
          return self.tileSizePx * self.RESOLUTIONS[int(zoom)f tileSize(self, zoom):
          "Returns the size (in meters) of a tile"
          assert zoom in range(0, len(self.RESOLUTIONS))
          return self.tileSizePx * self.RESOLUTIONS[int(zoom)]
docs: Returns the size (in meters) of a tile