From 12db16fd9cefcaaab89f8e13416e53b126a6c702 Mon Sep 17 00:00:00 2001
From: Hiroshi <horii@jp.ibm.com>
Date: Tue, 30 Mar 2021 10:27:38 +0900
Subject: [PATCH] format import in aerbackend

---
 qiskit/providers/aer/backends/aerbackend.py |  3 +--
 qiskit/providers/aer/profile.py             | 18 +++++++++---------
 test/terra/backends/test_profile.py         |  2 +-
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/qiskit/providers/aer/backends/aerbackend.py b/qiskit/providers/aer/backends/aerbackend.py
index ea573f504d..4ec539cbc6 100644
--- a/qiskit/providers/aer/backends/aerbackend.py
+++ b/qiskit/providers/aer/backends/aerbackend.py
@@ -30,10 +30,9 @@
 from qiskit.qobj import QasmQobj, PulseQobj
 from qiskit.compiler import assemble
 
-from qiskit.providers.aer.profile import get_performance_options
-
 from ..aerjob import AerJob
 from ..aererror import AerError
+from ..profile import get_performance_options
 
 # Logger
 logger = logging.getLogger(__name__)
diff --git a/qiskit/providers/aer/profile.py b/qiskit/providers/aer/profile.py
index 4fa323b678..2839062232 100644
--- a/qiskit/providers/aer/profile.py
+++ b/qiskit/providers/aer/profile.py
@@ -99,11 +99,11 @@ def _set_option(option_name, value, persist):
             filename = os.getenv('QISKIT_SETTINGS', user_config.DEFAULT_FILENAME)
             if os.path.isfile(filename):
                 config.read(filename)
-            if section_name not in config.sections():
-                config.add_section(section_name)
-            config.set(section_name, option_name, str(value))
-            with open(filename, "w+") as config_file:
-                config.write(config_file)
+                if section_name not in config.sections():
+                    config.add_section(section_name)
+                config.set(section_name, option_name, str(value))
+                with open(filename, "w+") as config_file:
+                    config.write(config_file)
 
     @staticmethod
     def _get_options_from_file(option2type):
@@ -337,7 +337,8 @@ def profile_fusion_threshold(min_qubits=10, max_qubits=20, ntrials=10,
     raise AerError(f'Unable to find threshold in range [{min_qubits}, {max_qubits}]')
 
 
-def profile_fusion_costs(num_qubits, ntrials=10, backend_options=None, gpu=False, diagonal=False):
+def profile_fusion_costs(num_qubits, ntrials=10, backend_options=None, gpu=False, diagonal=False,
+                         return_ratio=True):
     """Evaluate optimal costs in cost-based fusion for current system."""
     profile_opts = {'method': 'statevector',
                     'max_parallel_experiments': 1,
@@ -380,8 +381,7 @@ def profile_fusion_costs(num_qubits, ntrials=10, backend_options=None, gpu=False
                                           profile_circuit,
                                           None))
 
-    costs = []
-    for target in range(0, 5):
-        costs.append(all_gate_time[target] / all_gate_time[0])
+    base_line = all_gate_time[0] if return_ratio else 1.0
+    costs = [gate_time / base_line for gate_time in all_gate_time]
 
     return costs
diff --git a/test/terra/backends/test_profile.py b/test/terra/backends/test_profile.py
index 10b644aea7..5689ae71b2 100644
--- a/test/terra/backends/test_profile.py
+++ b/test/terra/backends/test_profile.py
@@ -26,7 +26,7 @@
 from qiskit.providers.aer import QasmSimulator
 from qiskit.providers.aer.profile import profile_performance_options, clear_performance_options
 
-#@unittest.skip("Remove this for manual run")
+@unittest.skip("Remove this for manual run")
 class TestProfileQasmSimulator(common.QiskitAerTestCase):