Method reverse

easygraph/classes/directed_multigraph.py:395–417

Returns the reverse of the graph. The reverse is a graph with the same nodes and edges but with the directions of the edges reversed. Parameters ---------- copy : bool optional (default=True) If True, return a new DiGraph holding the reversed edg

(self, copy=True)

        return G

    def reverse(self, copy=True):
        """Returns the reverse of the graph.

        The reverse is a graph with the same nodes and edges
        but with the directions of the edges reversed.

        Parameters
        ----------
        copy : bool optional (default=True)
            If True, return a new DiGraph holding the reversed edges.
            If False, the reverse graph is created using a view of
            the original graph.
        """
        if copy:
            H = self.__class__()
            H.graph.update(deepcopy(self.graph))
            H.add_nodes_from((n, deepcopy(d)) for n, d in self._node.items())
            H.add_edges_from(
                (v, u, k, deepcopy(d))
                for u, v, k, d in self.edges(keys=True, data=True)
            )
            return H
        return eg.graphviews.reverse_view(self)