qiskit/releasenotes/notes/0.17/dagcircuit-remove-deprecate...

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---
upgrade:
- |
The previously deprecated ``qubits()`` and ``clbits()`` methods on the
:class:`~qiskit.dagcircuit.DAGCircuit` class, which were deprecated in the
0.15.0 Terra release, have been removed. Instead you should use the
:attr:`~qiskit.dagcircuit.DAGCircuit.qubits` and
:attr:`~qiskit.dagcircuit.DAGCircuit.clbits` attributes of the
:class:`~qiskit.dagcircuit.DAGCircuit` class. For example, if you were
running::
from qiskit.dagcircuit import DAGCircuit
dag = DAGCircuit()
qubits = dag.qubits()
That would be replaced by::
from qiskit.dagcircuit import DAGCircuit
dag = DAGCircuit()
qubits = dag.qubits