qiskit.dagcircuit.DAGNode
class DAGNode(type=None, op=None, name=None, qargs=None, cargs=None, wire=None, nid=- 1)
Object to represent the information at a node in the DAGCircuit.
It is used as the return value from *_nodes() functions and can be supplied to functions that take a node.
Create a node
__init__
__init__(type=None, op=None, name=None, qargs=None, cargs=None, wire=None, nid=- 1)
Create a node
Methods
__init__([type, op, name, qargs, cargs, …]) | Create a node |
semantic_eq(node1, node2[, bit_indices1, …]) | Check if DAG nodes are considered equivalent, e.g., as a node_match for nx.is_isomorphic. |
Attributes
cargs | |
condition | Returns the condition of the node.op |
name | Returns the Instruction name corresponding to the op for this node |
op | Returns the Instruction object corresponding to the op for the node, else None |
qargs | Returns list of Qubit, else an empty list. |
sort_key | |
type | |
wire | Returns the Bit object, else None. |
condition
Returns the condition of the node.op
name
Returns the Instruction name corresponding to the op for this node
op
Returns the Instruction object corresponding to the op for the node, else None
qargs
Returns list of Qubit, else an empty list.
semantic_eq
static semantic_eq(node1, node2, bit_indices1=None, bit_indices2=None)
Check if DAG nodes are considered equivalent, e.g., as a node_match for nx.is_isomorphic.
Parameters
- node1 (DAGNode) – A node to compare.
- node2 (DAGNode) – The other node to compare.
- bit_indices1 (dict) – Dictionary mapping Bit instances to their index within the circuit containing node1
- bit_indices2 (dict) – Dictionary mapping Bit instances to their index within the circuit containing node2
Returns
If node1 == node2
Return type
Bool
wire
Returns the Bit object, else None.