_dagcircuit.py 文件源码

def remove_nonancestors_of(self, node):
        """Remove all of the non-ancestors operation nodes of node."""
        anc = nx.ancestors(self.multi_graph, node)
        comp = list(set(self.multi_graph.nodes()) - set(anc))
        for n in comp:
            nd = self.multi_graph.node[n]
            if nd["type"] == "op":
                self._remove_op_node(n)