qiskit.dagcircuit.DAGCircuit.topological_nodes

DAGCircuit.topological_nodes(key=None)

Yield nodes in topological order.

Parameters

key (Callable) – A callable which will take a DAGNode object and return a string sort key. If not specified the sort_key attribute will be used as the sort key for each node.

Returns

node in topological order

Return type

generator(DAGOpNode, DAGInNode, or DAGOutNode)