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
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
Parameters
- successors (list[int] | None)
- predecessors (list[int] | None)
- matchedwith (list[int] | None)
- successorstovisit (list[int] | None)
- isblocked (bool | None)
- qindices (list[int] | None)
- cindices (list[int] | None)
- nid (int)
cargs
Type: tuple[Clbit, ...]
cindices
Type: tuple[int, ...]
isblocked
Type: bool
matchedwith
Type: list[int] | None
name
Type: str | None
node_id
predecessors
Type: list[int]
qindices
Type: tuple[int, ...]
reachable
Type: bool | None
sort_key
Type: str
successors
Type: list[int]
successorstovisit
Type: list[int] | None
type
Type: str
op
Returns the Instruction object corresponding to the op for the node, else None
qargs
Type: tuple[Qubit, ...]
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