code: def count_tiles(geometry, pyramid, minzoom, maxzoom, init_zoom=0):
      
      if not 0 <= init_zoom <= minzoom <= maxzoom:
          raise ValueError("invalid zoom levels given")
      # tile buffers are not being taken into account
      unbuffered_pyramid = TilePyramid(
          pyramid.grid, tile_size=pyramid.tile_size,
          metatiling=pyramid.metatiling
      )
      # make sure no rounding errors occur
      geometry = geometry.buffer(-0.000000001)
      return _count_tiles(
          [
              unbuffered_pyramid.tile(*tile_id)
              for tile_id in product(
                  [init_zoom],
                  range(pyramid.matrix_height(init_zoom)),
                  range(pyramid.matrix_width(init_zoom))
              )
          ], geometry, minzoom, maxzoom
      )
docs: Count number of tiles intersecting with geometry.
  
      Parameters
      ----------
      geometry : shapely geometry
      pyramid : TilePyramid
      minzoom : int
      maxzoom : int
      init_zoom : int
  
      Returns
      -------
      number of tiles