def find_edge(self, eid):
        """Return the edge tuple of the given id.

        Parameters
        ----------
        eid : int
            The edge id.

        Returns
        -------
        int
            src node id
        int
            dst node id
        """
        ret = _CAPI_DGLGraphFindEdge(self, int(eid))
        return ret(0), ret(1)
Return the edge tuple of the given id.

        Parameters
        ----------
        eid : int
            The edge id.

        Returns
        -------
        int
            src node id
        int
            dst node id
        
python/dgl/graph_index.py