def node_subgraphs(self, vs_arr):
        """Return the induced node subgraphs.

        Parameters
        ----------
        vs_arr : a list of utils.Index
            The nodes.

        Returns
        -------
        a vector of SubgraphIndex
            The subgraph index.
        """
        gis = []
        for v in vs_arr:
            gis.append(self.node_subgraph(v))
        return gis
Return the induced node subgraphs.

        Parameters
        ----------
        vs_arr : a list of utils.Index
            The nodes.

        Returns
        -------
        a vector of SubgraphIndex
            The subgraph index.
        
python/dgl/graph_index.py