code: def vertex_fingerprints(self):
          
          return self.get_vertex_fingerprints(
              [self.get_vertex_string(i) for i in range(self.num_vertices)],
              [self.get_edge_string(i) for i in range(self.num_edges)],
          )
docs: A fingerprint for each vertex
  
             The result is invariant under permutation of the vertex indexes.
             Vertices that are symmetrically equivalent will get the same
             fingerprint, e.g. the hydrogens in methane would get the same
             fingerprint.