code: def get_connections(self):
          
          con = []
          maxconn = self.max_connectivity
          for ii in range(0, maxconn.shape[0]):
              for jj in range(0, maxconn.shape[1]):
                  if maxconn[ii][jj] != 0:
                      dist = self.s.get_distance(ii, jj)
                      con.append([ii, jj, dist])
          return con
docs: Returns a list of site pairs that are Voronoi Neighbors, along
          with their real-space distances.