From 1e1ae9662065529ab856a74ad01db9910fb4b259 Mon Sep 17 00:00:00 2001
From: Jun Doi <doichan@jp.ibm.com>
Date: Thu, 8 Aug 2024 18:05:41 +0900
Subject: [PATCH] lint

---
 qiskit_aer/backends/aer_simulator.py  |  3 +--
 qiskit_aer/backends/aerbackend.py     | 15 +--------------
 qiskit_aer/backends/qasm_simulator.py |  9 +++++----
 3 files changed, 7 insertions(+), 20 deletions(-)

diff --git a/qiskit_aer/backends/aer_simulator.py b/qiskit_aer/backends/aer_simulator.py
index a316f779c3..f5badc852d 100644
--- a/qiskit_aer/backends/aer_simulator.py
+++ b/qiskit_aer/backends/aer_simulator.py
@@ -18,7 +18,6 @@
 from qiskit.providers import convert_to_target
 from qiskit.providers.options import Options
 from qiskit.providers.backend import BackendV2, BackendV1
-from qiskit.transpiler.target import target_to_backend_properties
 
 from ..version import __version__
 from .aerbackend import AerBackend, AerError
@@ -854,7 +853,7 @@ def from_backend(cls, backend, **options):
             target = backend.target
         elif isinstance(backend, BackendV1):
             # BackendV1 will be removed in Qiskit 2.0, so we will remove this soon
-            warnings.warn(
+            warn(
                 " from_backend using V1 based backend is deprecated as of Aer 0.15"
                 " and will be removed no sooner than 3 months from that release"
                 " date. Please use backends based on V2.",
diff --git a/qiskit_aer/backends/aerbackend.py b/qiskit_aer/backends/aerbackend.py
index 43ec732cce..c0865acf2b 100644
--- a/qiskit_aer/backends/aerbackend.py
+++ b/qiskit_aer/backends/aerbackend.py
@@ -29,7 +29,7 @@
 from qiskit.qobj import QasmQobj, PulseQobj
 from qiskit.result import Result
 from qiskit.transpiler import CouplingMap
-from qiskit.circuit.controlflow import CONTROL_FLOW_OP_NAMES
+from qiskit.circuit.library.standard_gates import get_standard_gate_name_mapping
 from ..aererror import AerError
 from ..jobs import AerJob, AerJobSet, split_qobj
 from ..noise.noise_model import NoiseModel, QuantumErrorLocation
@@ -329,21 +329,8 @@ def target(self):
             return self._target
 
         # make target for AerBackend
-
-        # importing packages where they are needed, to avoid cyclic-import.
-        # pylint: disable=cyclic-import
-        from qiskit.transpiler.target import (
-            Target,
-            InstructionProperties,
-        )
-        from qiskit.circuit.controlflow import ForLoopOp, IfElseOp, SwitchCaseOp, WhileLoopOp
-        from qiskit.circuit.library.standard_gates import get_standard_gate_name_mapping
-        from qiskit.circuit.parameter import Parameter
-        from qiskit.circuit.gate import Gate
-
         required = ["measure", "delay"]
 
-        # Load Qiskit object representation
         qiskit_inst_mapping = get_standard_gate_name_mapping()
         qiskit_inst_mapping.update(NAME_MAPPING)
 
diff --git a/qiskit_aer/backends/qasm_simulator.py b/qiskit_aer/backends/qasm_simulator.py
index b3f8d90497..a74a2d6c18 100644
--- a/qiskit_aer/backends/qasm_simulator.py
+++ b/qiskit_aer/backends/qasm_simulator.py
@@ -16,9 +16,9 @@
 import copy
 import logging
 from warnings import warn
+from qiskit.providers import convert_to_target
 from qiskit.providers.options import Options
-from qiskit.providers.models import QasmBackendConfiguration
-from qiskit.providers.backend import BackendV2
+from qiskit.providers.backend import BackendV2, BackendV1
 
 from ..version import __version__
 from ..aererror import AerError
@@ -35,6 +35,7 @@
 
 # pylint: disable=import-error, no-name-in-module, abstract-method
 from .controller_wrappers import aer_controller_execute
+from .name_mapping import NAME_MAPPING
 
 logger = logging.getLogger(__name__)
 
@@ -431,7 +432,7 @@ class QasmSimulator(AerBackend):
 
     _AVAILABLE_DEVICES = None
 
-    def __init__(self, configuration=None, properties=None, provider=None, **backend_options):
+    def __init__(self, configuration=None, provider=None, **backend_options):
         warn(
             "The `QasmSimulator` backend will be deprecated in the"
             " future. It has been superseded by the `AerSimulator`"
@@ -550,7 +551,7 @@ def from_backend(cls, backend, **options):
             target = backend.target
         elif isinstance(backend, BackendV1):
             # BackendV1 will be removed in Qiskit 2.0, so we will remove this soon
-            warnings.warn(
+            warn(
                 " from_backend using V1 based backend is deprecated as of Aer 0.15"
                 " and will be removed no sooner than 3 months from that release"
                 " date. Please use backends based on V2.",