code: def neighbors_from_pixelization(self, pixels, ridge_points):
          
          return pixelization_util.voronoi_neighbors_from_pixels_and_ridge_points(pixels=pixels,
                                                                                  ridge_points=np.asarray(ridge_points))
docs: Compute the neighbors of every Voronoi pixel as an ndarray of the pixel index's each pixel shares a \
          vertex with.
  
          The ridge points of the Voronoi grid are used to derive this.
  
          Parameters
          ----------
          ridge_points : scipy.spatial.Voronoi.ridge_points
              Each Voronoi-ridge (two indexes representing a pixel mapping_matrix).