DAGDepNode
class qiskit.dagcircuit.DAGDepNode(type=None, op=None, name=None, qargs=(), cargs=(), successors=None, predecessors=None, reachable=None, matchedwith=None, successorstovisit=None, isblocked=None, qindices=None, cindices=None, nid=-1)
Bases: object(opens in a new tab)
Object to represent the information at a node in the DAGDependency().
It is used as the return value from *_nodes() functions and can be supplied to functions that take a node.
Attributes
type
name
cargs
sort_key
Type: str
node_id
successors
Type: list[int]
predecessors
Type: list[int]
reachable
matchedwith
Type: list[int]
isblocked
Type: bool
successorstovisit
Type: list[int]
qindices
Type: list[int]
cindices
Type: list[int]
op
Returns the Instruction object corresponding to the op for the node, else None
qargs
Returns list of Qubit, else an empty list.
Methods
copy
copy()
Function to copy a DAGDepNode object. :returns: a copy of a DAGDepNode object. :rtype: DAGDepNode
semantic_eq
static semantic_eq(node1, node2)
Check if DAG nodes are considered equivalent, e.g., as a node_match for nx.is_isomorphic.
Parameters
- node1 (DAGDepNode) – A node to compare.
- node2 (DAGDepNode) – The other node to compare.
Returns
If node1 == node2
Return type