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Remove legacy providers interface #361

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merged 2 commits into from
Apr 20, 2022
Merged

Remove legacy providers interface #361

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d6f4d0b
Remove legacy providers interface
manoelmarques Apr 12, 2022
b870ed1
Add releaase note
manoelmarques Apr 13, 2022
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10 changes: 4 additions & 6 deletions qiskit_optimization/algorithms/grover_optimizer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@
from qiskit.utils import QuantumInstance, algorithm_globals
from qiskit.algorithms.amplitude_amplifiers.grover import Grover
from qiskit.circuit.library import QuadraticForm
from qiskit.providers import Backend, BaseBackend
from qiskit.providers import Backend
from qiskit.quantum_info import partial_trace
from .optimization_algorithm import (
OptimizationResultStatus,
Expand All @@ -49,7 +49,7 @@ def __init__(
self,
num_value_qubits: int,
num_iterations: int = 3,
quantum_instance: Optional[Union[BaseBackend, Backend, QuantumInstance]] = None,
quantum_instance: Optional[Union[Backend, QuantumInstance]] = None,
converters: Optional[
Union[QuadraticProgramConverter, List[QuadraticProgramConverter]]
] = None,
Expand Down Expand Up @@ -91,15 +91,13 @@ def quantum_instance(self) -> QuantumInstance:
return self._quantum_instance

@quantum_instance.setter
def quantum_instance(
self, quantum_instance: Union[Backend, BaseBackend, QuantumInstance]
) -> None:
def quantum_instance(self, quantum_instance: Union[Backend, QuantumInstance]) -> None:
"""Set the quantum instance used to run the circuits.

Args:
quantum_instance: The quantum instance to be used in the algorithm.
"""
if isinstance(quantum_instance, (BaseBackend, Backend)):
if isinstance(quantum_instance, Backend):
self._quantum_instance = QuantumInstance(quantum_instance)
else:
self._quantum_instance = quantum_instance
Expand Down
5 changes: 5 additions & 0 deletions releasenotes/notes/basebackend-d32c42427b434739.yaml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
upgrade:
- |
The previously deprecated ``BaseBackend`` class has been removed.
It was originally deprecated in the Qiskit Terra 0.18.0 release.