fix pylint warning.

example/mnist_demo/lenet5_mnist_coverage.py

@@ -12,18 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
-import numpy as np
 
+import numpy as np
 from mindspore import Model
 from mindspore import context
-from mindspore.train.serialization import load_checkpoint, load_param_into_net
 from mindspore.nn import SoftmaxCrossEntropyWithLogits
+from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.gradient_method import FastGradientSignMethod
-from mindarmour.utils.logger import LogUtil
 from mindarmour.fuzzing.model_coverage_metrics import ModelCoverageMetrics
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 sys.path.append("..")
 from data_processing import generate_mnist_dataset

example/mnist_demo/lenet5_mnist_fuzzing.py

@@ -12,18 +12,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
-import numpy as np
 
+import numpy as np
 from mindspore import Model
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
-from mindspore.nn import SoftmaxCrossEntropyWithLogits
 
-from mindarmour.attacks.gradient_method import FastGradientSignMethod
-from mindarmour.utils.logger import LogUtil
-from mindarmour.fuzzing.model_coverage_metrics import ModelCoverageMetrics
-from mindarmour.fuzzing.fuzzing import Fuzzing
 from lenet5_net import LeNet5
+from mindarmour.fuzzing.fuzzing import Fuzzing
+from mindarmour.fuzzing.model_coverage_metrics import ModelCoverageMetrics
+from mindarmour.utils.logger import LogUtil
 
 sys.path.append("..")
 from data_processing import generate_mnist_dataset
@@ -81,8 +79,11 @@ def test_lenet_mnist_fuzzing():
 
     model_fuzz_test = Fuzzing(initial_seeds, model, train_images, 20)
     failed_tests = model_fuzz_test.fuzzing()
+    if failed_tests:
         model_coverage_test.test_adequacy_coverage_calculate(np.array(failed_tests).astype(np.float32))
         LOGGER.info(TAG, 'KMNC of this test is : %s', model_coverage_test.get_kmnc())
+    else:
+        LOGGER.info(TAG, 'Fuzzing test identifies none failed test')
 
 
 if __name__ == '__main__':

example/mnist_demo/mnist_attack_cw.py

@@ -13,20 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.carlini_wagner import CarliniWagnerL2Attack
-from mindarmour.utils.logger import LogUtil
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_attack_deepfool.py

@@ -13,20 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.deep_fool import DeepFool
-from mindarmour.utils.logger import LogUtil
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_attack_fgsm.py

@@ -13,21 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.gradient_method import FastGradientSignMethod
-
-from mindarmour.utils.logger import LogUtil
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_attack_genetic.py

@@ -13,20 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
-from mindarmour.attacks.black.genetic_attack import GeneticAttack
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
-from mindarmour.utils.logger import LogUtil
+from mindarmour.attacks.black.genetic_attack import GeneticAttack
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
@@ -97,8 +96,8 @@ def test_genetic_attack_on_mnist():
                            per_bounds=0.1, step_size=0.25, temp=0.1,
                            sparse=True)
     targeted_labels = np.random.randint(0, 10, size=len(true_labels))
-    for i in range(len(true_labels)):
-        if targeted_labels[i] == true_labels[i]:
+    for i, true_l in enumerate(true_labels):
+        if targeted_labels[i] == true_l:
             targeted_labels[i] = (targeted_labels[i] + 1) % 10
     start_time = time.clock()
     success_list, adv_data, query_list = attack.generate(

example/mnist_demo/mnist_attack_hsja.py

@@ -12,18 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
+
 import numpy as np
 import pytest
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
-from mindarmour.attacks.black.hop_skip_jump_attack import HopSkipJumpAttack
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
-
+from mindarmour.attacks.black.hop_skip_jump_attack import HopSkipJumpAttack
 from mindarmour.utils.logger import LogUtil
-from lenet5_net import LeNet5
 
 sys.path.append("..")
 from data_processing import generate_mnist_dataset
@@ -64,9 +63,9 @@ def random_target_labels(true_labels):
 def create_target_images(dataset, data_labels, target_labels):
     res = []
     for label in target_labels:
-        for i in range(len(data_labels)):
-            if data_labels[i] == label:
-                res.append(dataset[i])
+        for data_label, data in zip(data_labels, dataset):
+            if data_label == label:
+                res.append(data)
                 break
     return np.array(res)
 
@@ -126,9 +125,9 @@ def test_hsja_mnist_attack():
         target_images = create_target_images(test_images, predict_labels,
                                              target_labels)
         attack.set_target_images(target_images)
-        success_list, adv_data, query_list = attack.generate(test_images, target_labels)
+        success_list, adv_data, _ = attack.generate(test_images, target_labels)
     else:
-        success_list, adv_data, query_list = attack.generate(test_images, None)
+        success_list, adv_data, _ = attack.generate(test_images, None)
 
     adv_datas = []
     gts = []
@@ -136,7 +135,7 @@ def test_hsja_mnist_attack():
         if success:
             adv_datas.append(adv)
             gts.append(gt)
-    if len(gts) > 0:
+    if gts:
         adv_datas = np.concatenate(np.asarray(adv_datas), axis=0)
         gts = np.asarray(gts)
         pred_logits_adv = model.predict(adv_datas)

example/mnist_demo/mnist_attack_jsma.py

@@ -13,20 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.jsma import JSMAAttack
-from mindarmour.utils.logger import LogUtil
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
@@ -79,8 +78,8 @@ def test_jsma_attack():
     predict_labels = np.concatenate(predict_labels)
     true_labels = np.concatenate(test_labels)
     targeted_labels = np.random.randint(0, 10, size=len(true_labels))
-    for i in range(len(true_labels)):
-        if targeted_labels[i] == true_labels[i]:
+    for i, true_l in enumerate(true_labels):
+        if targeted_labels[i] == true_l:
             targeted_labels[i] = (targeted_labels[i] + 1) % 10
     accuracy = np.mean(np.equal(predict_labels, true_labels))
     LOGGER.info(TAG, "prediction accuracy before attacking is : %g", accuracy)

example/mnist_demo/mnist_attack_lbfgs.py

@@ -13,20 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.lbfgs import LBFGS
-from mindarmour.utils.logger import LogUtil
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
@@ -85,8 +84,8 @@ def test_lbfgs_attack():
     is_targeted = True
     if is_targeted:
         targeted_labels = np.random.randint(0, 10, size=len(true_labels)).astype(np.int32)
-        for i in range(len(true_labels)):
-            if targeted_labels[i] == true_labels[i]:
+        for i, true_l in enumerate(true_labels):
+            if targeted_labels[i] == true_l:
                 targeted_labels[i] = (targeted_labels[i] + 1) % 10
     else:
         targeted_labels = true_labels.astype(np.int32)

example/mnist_demo/mnist_attack_mdi2fgsm.py

@@ -13,21 +13,20 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
-
-from mindarmour.attacks.iterative_gradient_method import MomentumDiverseInputIterativeMethod
-
-from mindarmour.utils.logger import LogUtil
-from mindarmour.evaluations.attack_evaluation import AttackEvaluate
+from scipy.special import softmax
 
 from lenet5_net import LeNet5
+from mindarmour.attacks.iterative_gradient_method import \
+    MomentumDiverseInputIterativeMethod
+from mindarmour.evaluations.attack_evaluation import AttackEvaluate
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_attack_nes.py

@@ -12,18 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
+
 import numpy as np
 import pytest
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
-from mindarmour.attacks.black.natural_evolutionary_strategy import NES
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
-
+from mindarmour.attacks.black.natural_evolutionary_strategy import NES
 from mindarmour.utils.logger import LogUtil
-from lenet5_net import LeNet5
 
 sys.path.append("..")
 from data_processing import generate_mnist_dataset
@@ -73,9 +72,9 @@ def _pseudorandom_target(index, total_indices, true_class):
 def create_target_images(dataset, data_labels, target_labels):
     res = []
     for label in target_labels:
-        for i in range(len(data_labels)):
-            if data_labels[i] == label:
-                res.append(dataset[i])
+        for data_label, data in zip(data_labels, dataset):
+            if data_label == label:
+                res.append(data)
                 break
     return np.array(res)
 

example/mnist_demo/mnist_attack_pgd.py

@@ -13,21 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks.iterative_gradient_method import ProjectedGradientDescent
-
-from mindarmour.utils.logger import LogUtil
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_attack_pointwise.py

@@ -12,20 +12,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
-from mindarmour.attacks.black.pointwise_attack import PointWiseAttack
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
-from mindarmour.utils.logger import LogUtil
+from mindarmour.attacks.black.pointwise_attack import PointWiseAttack
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
@@ -99,8 +98,8 @@ def test_pointwise_attack_on_mnist():
     attack = PointWiseAttack(model=model, is_targeted=is_target)
     if is_target:
         targeted_labels = np.random.randint(0, 10, size=len(true_labels))
-        for i in range(len(true_labels)):
-            if targeted_labels[i] == true_labels[i]:
+        for i, true_l in enumerate(true_labels):
+            if targeted_labels[i] == true_l:
                 targeted_labels[i] = (targeted_labels[i] + 1) % 10
     else:
         targeted_labels = true_labels

example/mnist_demo/mnist_attack_pso.py

@@ -13,20 +13,19 @@
 # limitations under the License.
 import sys
 import time
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
-from mindarmour.attacks.black.pso_attack import PSOAttack
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
-from mindarmour.utils.logger import LogUtil
+from mindarmour.attacks.black.pso_attack import PSOAttack
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_attack_salt_and_pepper.py

@@ -12,20 +12,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
-from mindarmour.attacks.black.salt_and_pepper_attack import SaltAndPepperNoiseAttack
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
-from mindarmour.utils.logger import LogUtil
+from mindarmour.attacks.black.salt_and_pepper_attack import SaltAndPepperNoiseAttack
 from mindarmour.evaluations.attack_evaluation import AttackEvaluate
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
@@ -102,8 +101,8 @@ def test_salt_and_pepper_attack_on_mnist():
                                       sparse=True)
     if is_target:
         targeted_labels = np.random.randint(0, 10, size=len(true_labels))
-        for i in range(len(true_labels)):
-            if targeted_labels[i] == true_labels[i]:
+        for i, true_l in enumerate(true_labels):
+            if targeted_labels[i] == true_l:
                 targeted_labels[i] = (targeted_labels[i] + 1) % 10
     else:
         targeted_labels = true_labels

example/mnist_demo/mnist_defense_nad.py

@@ -12,25 +12,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """defense example using nad"""
-import sys
-
 import logging
+import sys
 
 import numpy as np
 import pytest
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore import nn
 from mindspore.nn import SoftmaxCrossEntropyWithLogits
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
+from lenet5_net import LeNet5
 from mindarmour.attacks import FastGradientSignMethod
 from mindarmour.defenses import NaturalAdversarialDefense
 from mindarmour.utils.logger import LogUtil
 
-from lenet5_net import LeNet5
-
 sys.path.append("..")
 from data_processing import generate_mnist_dataset
 

example/mnist_demo/mnist_evaluation.py

@@ -12,30 +12,30 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """evaluate example"""
-import sys
 import os
+import sys
 import time
-import numpy as np
-from scipy.special import softmax
 
-from lenet5_net import LeNet5
+import numpy as np
 from mindspore import Model
 from mindspore import Tensor
 from mindspore import context
 from mindspore import nn
 from mindspore.nn import Cell
-from mindspore.ops.operations import TensorAdd
 from mindspore.nn import SoftmaxCrossEntropyWithLogits
+from mindspore.ops.operations import TensorAdd
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
+from lenet5_net import LeNet5
 from mindarmour.attacks import FastGradientSignMethod
 from mindarmour.attacks import GeneticAttack
 from mindarmour.attacks.black.black_model import BlackModel
 from mindarmour.defenses import NaturalAdversarialDefense
+from mindarmour.detectors.black.similarity_detector import SimilarityDetector
 from mindarmour.evaluations import BlackDefenseEvaluate
 from mindarmour.evaluations import DefenseEvaluate
 from mindarmour.utils.logger import LogUtil
-from mindarmour.detectors.black.similarity_detector import SimilarityDetector
 
 sys.path.append("..")
 from data_processing import generate_mnist_dataset
@@ -237,7 +237,7 @@ def test_black_defense():
     # gen black-box adversarial examples of test data
     for idx in range(attacked_size):
         raw_st = time.time()
-        raw_sl, raw_a, raw_qc = attack_rm.generate(
+        _, raw_a, raw_qc = attack_rm.generate(
             np.expand_dims(attacked_sample[idx], axis=0),
             np.expand_dims(attack_target_label[idx], axis=0))
         raw_t = time.time() - raw_st
@@ -271,7 +271,7 @@ def test_black_defense():
                               sparse=False)
     for idx in range(attacked_size):
         def_st = time.time()
-        def_sl, def_a, def_qc = attack_dm.generate(
+        _, def_a, def_qc = attack_dm.generate(
             np.expand_dims(attacked_sample[idx], axis=0),
             np.expand_dims(attack_target_label[idx], axis=0))
         def_t = time.time() - def_st

example/mnist_demo/mnist_similarity_detector.py

@@ -12,23 +12,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import sys
+
 import numpy as np
 import pytest
-from scipy.special import softmax
-
 from mindspore import Model
-from mindspore import context
 from mindspore import Tensor
+from mindspore import context
 from mindspore.nn import Cell
 from mindspore.ops.operations import TensorAdd
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
+from scipy.special import softmax
 
-from mindarmour.utils.logger import LogUtil
-from mindarmour.attacks.black.pso_attack import PSOAttack
+from lenet5_net import LeNet5
 from mindarmour.attacks.black.black_model import BlackModel
+from mindarmour.attacks.black.pso_attack import PSOAttack
 from mindarmour.detectors.black.similarity_detector import SimilarityDetector
-
-from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 

example/mnist_demo/mnist_train.py

@@ -11,20 +11,18 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# ============================================================================
 import os
 import sys
 
 import mindspore.nn as nn
-from mindspore import context, Tensor
+from mindspore import context
+from mindspore.nn.metrics import Accuracy
+from mindspore.train import Model
 from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMonitor
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
-from mindspore.train import Model
-from mindspore.nn.metrics import Accuracy
-
-from mindarmour.utils.logger import LogUtil
 
 from lenet5_net import LeNet5
+from mindarmour.utils.logger import LogUtil
 
 sys.path.append("..")
 from data_processing import generate_mnist_dataset

mindarmour/attacks/gradient_method.py

@@ -183,8 +183,7 @@ class FastGradientMethod(GradientMethod):
             >>> grad = self._gradient([[0.2, 0.3, 0.4]],
             >>> [[0, 1, 0, 0, 0, 0, 0, 0, 0, 0])
         """
-        sens = Tensor(np.array([1.0], self._dtype))
-        out_grad = self._grad_all(Tensor(inputs), Tensor(labels), sens)
+        out_grad = self._grad_all(Tensor(inputs), Tensor(labels))
         if isinstance(out_grad, tuple):
             out_grad = out_grad[0]
         gradient = out_grad.asnumpy()
@@ -286,8 +285,7 @@ class FastGradientSignMethod(GradientMethod):
             >>> grad = self._gradient([[0.2, 0.3, 0.4]],
             >>> [[0, 1, 0, 0, 0, 0, 0, 0, 0, 0])
         """
-        sens = Tensor(np.array([1.0], self._dtype))
-        out_grad = self._grad_all(Tensor(inputs), Tensor(labels), sens)
+        out_grad = self._grad_all(Tensor(inputs), Tensor(labels))
         if isinstance(out_grad, tuple):
             out_grad = out_grad[0]
         gradient = out_grad.asnumpy()

mindarmour/attacks/iterative_gradient_method.py

@@ -351,9 +351,8 @@ class MomentumIterativeMethod(IterativeGradientMethod):
             >>> grad = self._gradient([[0.5, 0.3, 0.4]],
             >>>                       [[0, 0, 0, 1, 0, 0, 0, 0, 0, 0])
         """
-        sens = Tensor(np.array([1.0], inputs.dtype))
         # get grad of loss over x
-        out_grad = self._loss_grad(Tensor(inputs), Tensor(labels), sens)
+        out_grad = self._loss_grad(Tensor(inputs), Tensor(labels))
         if isinstance(out_grad, tuple):
             out_grad = out_grad[0]
         gradient = out_grad.asnumpy()

mindarmour/attacks/lbfgs.py

@@ -115,12 +115,11 @@ class LBFGS(Attack):
     def _gradient(self, cur_input, labels, shape):
         """ Return model gradient to minimize loss in l-bfgs-b."""
         label_dtype = labels.dtype
-        sens = Tensor(np.array([1], self._dtype))
         labels = np.expand_dims(labels, axis=0).astype(label_dtype)
         # input shape should like original shape
         reshape_input = np.expand_dims(cur_input.reshape(shape),
                                        axis=0)
-        out_grad = self._grad_all(Tensor(reshape_input), Tensor(labels), sens)
+        out_grad = self._grad_all(Tensor(reshape_input), Tensor(labels))
         if isinstance(out_grad, tuple):
             out_grad = out_grad[0]
         return out_grad.asnumpy()
@@ -131,8 +130,8 @@ class LBFGS(Attack):
         the cross-entropy loss.
         """
         cur_input = cur_input.astype(self._dtype)
-        l2_distance = np.linalg.norm(cur_input.reshape(
-            (cur_input.shape[0], -1)) - start_input.reshape(
+        l2_distance = np.linalg.norm(
+            cur_input.reshape((cur_input.shape[0], -1)) - start_input.reshape(
                 (start_input.shape[0], -1)))
         logits = self._forward_one(cur_input.reshape(shape)).flatten()
         logits = logits - np.max(logits)

mindarmour/fuzzing/fuzzing.py

@@ -14,17 +14,17 @@
 """
 Fuzzing.
 """
-import numpy as np
 from random import choice
 
-from mindspore import Tensor
+import numpy as np
 from mindspore import Model
+from mindspore import Tensor
 
 from mindarmour.fuzzing.model_coverage_metrics import ModelCoverageMetrics
-from mindarmour.utils.image_transform import Contrast, Brightness, Blur, Noise, \
-    Translate, Scale, Shear, Rotate
 from mindarmour.utils._check_param import check_model, check_numpy_param, \
     check_int_positive
+from mindarmour.utils.image_transform import Contrast, Brightness, Blur, Noise, \
+    Translate, Scale, Shear, Rotate
 
 
 class Fuzzing:
@@ -40,9 +40,10 @@ class Fuzzing:
         target_model (Model): Target fuzz model.
         train_dataset (numpy.ndarray): Training dataset used for determine
             the neurons' output boundaries.
-        const_K (int): The number of mutate tests for a seed.
+        const_k (int): The number of mutate tests for a seed.
         mode (str): Image mode used in image transform, 'L' means grey graph.
             Default: 'L'.
+        max_seed_num (int): The initial seeds max value. Default: 1000
     """
 
     def __init__(self, initial_seeds, target_model, train_dataset, const_K,
@@ -50,7 +51,7 @@ class Fuzzing:
         self.initial_seeds = initial_seeds
         self.target_model = check_model('model', target_model, Model)
         self.train_dataset = check_numpy_param('train_dataset', train_dataset)
-        self.K = check_int_positive('const_k', const_K)
+        self.const_k = check_int_positive('const_k', const_K)
         self.mode = mode
         self.max_seed_num = check_int_positive('max_seed_num', max_seed_num)
         self.coverage_metrics = ModelCoverageMetrics(target_model, 1000, 10,
@@ -73,7 +74,7 @@ class Fuzzing:
                    'Noise': Noise,
                    'Translate': Translate, 'Scale': Scale, 'Shear': Shear,
                    'Rotate': Rotate}
-        for _ in range(self.K):
+        for _ in range(self.const_k):
             for _ in range(try_num):
                 if (info[0] == info[1]).all():
                     trans_strage = self._random_pick_mutate(affine_trans,
@@ -91,7 +92,7 @@ class Fuzzing:
                     if trans_strage in affine_trans:
                         info[1] = mutate_test
                     mutate_tests.append(mutate_test)
-            if len(mutate_tests) == 0:
+            if not mutate_tests:
                 mutate_tests.append(seed)
             return np.array(mutate_tests)
 
@@ -109,7 +110,7 @@ class Fuzzing:
         seed = self._select_next()
         failed_tests = []
         seed_num = 0
-        while len(seed) > 0 and seed_num < self.max_seed_num:
+        while seed and seed_num < self.max_seed_num:
             mutate_tests = self._metamorphic_mutate(seed[0])
             coverages, results = self._run(mutate_tests, coverage_metric)
             coverage_gains = self._coverage_gains(coverages)
@@ -157,13 +158,13 @@ class Fuzzing:
         beta = 0.2
         diff = np.array(seed - mutate_test).flatten()
         size = np.shape(diff)[0]
-        L0 = np.linalg.norm(diff, ord=0)
-        Linf = np.linalg.norm(diff, ord=np.inf)
-        if L0 > alpha*size:
-            if Linf < 256:
+        l0 = np.linalg.norm(diff, ord=0)
+        linf = np.linalg.norm(diff, ord=np.inf)
+        if l0 > alpha*size:
+            if linf < 256:
                 is_valid = True
         else:
-            if Linf < beta*255:
+            if linf < beta*255:
                 is_valid = True
 
         return is_valid

mindarmour/utils/util.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 """ Util for MindArmour. """
 import numpy as np
-
 from mindspore import Tensor
 from mindspore.nn import Cell
 from mindspore.ops.composite import GradOperation
@@ -99,23 +98,21 @@ class GradWrapWithLoss(Cell):
         super(GradWrapWithLoss, self).__init__()
         self._grad_all = GradOperation(name="get_all",
                                        get_all=True,
-                                       sens_param=True)
+                                       sens_param=False)
         self._network = network
 
-    def construct(self, inputs, labels, weight):
+    def construct(self, inputs, labels):
         """
         Compute gradient of `inputs` with labels and weight.
 
         Args:
             inputs (Tensor): Inputs of network.
             labels (Tensor): Labels of inputs.
-            weight (Tensor): Weight of each gradient, `weight` has the same
-                shape with labels.
 
         Returns:
             Tensor, gradient matrix.
         """
-        gout = self._grad_all(self._network)(inputs, labels, weight)
+        gout = self._grad_all(self._network)(inputs, labels)
         return gout[0]
 
 

tests/st/resnet50/resnet_cifar10.py

@@ -12,12 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import numpy as np
-import math
-
 from mindspore import nn
-from mindspore.ops import operations as P
 from mindspore.common.tensor import Tensor
-from mindspore import context
+from mindspore.ops import operations as P
 
 
 def variance_scaling_raw(shape):
@@ -110,8 +107,7 @@ class ResidualBlock(nn.Cell):
     def __init__(self,
                  in_channels,
                  out_channels,
-                 stride=1,
-                 down_sample=False):
+                 stride=1):
         super(ResidualBlock, self).__init__()
 
         out_chls = out_channels // self.expansion
@@ -168,7 +164,7 @@ class ResidualBlockWithDown(nn.Cell):
         self.bn3 = bn_with_initialize_last(out_channels)
 
         self.relu = P.ReLU()
-        self.downSample = down_sample
+        self.downsample = down_sample
 
         self.conv_down_sample = conv1x1(in_channels, out_channels, stride=stride, padding=0)
         self.bn_down_sample = bn_with_initialize(out_channels)

tests/st/resnet50/test_cifar10_attack_fgsm.py

@@ -18,7 +18,6 @@ Fuction:
 Usage:
     py.test test_cifar10_attack_fgsm.py
 """
-import os
 import numpy as np
 
 import pytest

tests/ut/python/attacks/black/test_genetic_attack.py

@@ -16,15 +16,13 @@ Genetic-Attack test.
 """
 import numpy as np
 import pytest
-
 import mindspore.ops.operations as M
 from mindspore import Tensor
-from mindspore.nn import Cell
 from mindspore import context
+from mindspore.nn import Cell
 
-from mindarmour.attacks.black.genetic_attack import GeneticAttack
 from mindarmour.attacks.black.black_model import BlackModel
-
+from mindarmour.attacks.black.genetic_attack import GeneticAttack
 
 context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
 
@@ -115,7 +113,7 @@ def test_supplement():
                            adaptive=True,
                            sparse=False)
     # raise error
-    _, adv_data, _ = attack.generate(inputs, labels)
+    _, _, _ = attack.generate(inputs, labels)
 
 
 @pytest.mark.level0
@@ -140,5 +138,5 @@ def test_value_error():
                            adaptive=True,
                            sparse=False)
     # raise error
-    with pytest.raises(ValueError) as e:
+    with pytest.raises(ValueError):
         assert attack.generate(inputs, labels)

tests/ut/python/attacks/black/test_hsja.py

@@ -11,19 +11,19 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import sys
 import os
+import sys
+
 import numpy as np
 import pytest
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
-from mindarmour.attacks.black.hop_skip_jump_attack import HopSkipJumpAttack
 from mindarmour.attacks.black.black_model import BlackModel
-
+from mindarmour.attacks.black.hop_skip_jump_attack import HopSkipJumpAttack
 from mindarmour.utils.logger import LogUtil
+
 sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)),
                              "../../../../../"))
 from example.mnist_demo.lenet5_net import LeNet5
@@ -135,7 +135,7 @@ def test_hsja_mnist_attack():
         attack.set_target_images(target_images)
         success_list, adv_data, _ = attack.generate(test_images, target_labels)
     else:
-        success_list, adv_data, query_list = attack.generate(test_images, None)
+        success_list, adv_data, _ = attack.generate(test_images, None)
     assert (adv_data != test_images).any()
 
     adv_datas = []
@@ -144,7 +144,7 @@ def test_hsja_mnist_attack():
         if success:
             adv_datas.append(adv)
             gts.append(gt)
-    if len(gts) > 0:
+    if gts:
         adv_datas = np.concatenate(np.asarray(adv_datas), axis=0)
         gts = np.asarray(gts)
         pred_logits_adv = model.predict(adv_datas)
@@ -162,5 +162,5 @@ def test_hsja_mnist_attack():
 def test_value_error():
     model = get_model()
     norm = 'l2'
-    with pytest.raises(ValueError) as e:
+    with pytest.raises(ValueError):
         assert HopSkipJumpAttack(model, constraint=norm, stepsize_search='bad-search')

tests/ut/python/attacks/black/test_nes.py

@@ -11,19 +11,19 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import os
 import sys
+
 import numpy as np
-import os
 import pytest
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
-from mindarmour.attacks.black.natural_evolutionary_strategy import NES
 from mindarmour.attacks.black.black_model import BlackModel
-
+from mindarmour.attacks.black.natural_evolutionary_strategy import NES
 from mindarmour.utils.logger import LogUtil
+
 sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)),
                              "../../../../../"))
 from example.mnist_demo.lenet5_net import LeNet5
@@ -156,7 +156,7 @@ def nes_mnist_attack(scene, top_k):
     assert (advs != test_images[:batch_num]).any()
 
     adv_pred = np.argmax(model.predict(advs), axis=1)
-    adv_accuracy = np.mean(np.equal(adv_pred, true_labels[:test_length]))
+    _ = np.mean(np.equal(adv_pred, true_labels[:test_length]))
 
 
 @pytest.mark.level0

tests/ut/python/attacks/black/test_pointwise_attack.py

@@ -14,19 +14,18 @@
 """
 PointWise Attack test
 """
-import sys
 import os
+import sys
+
 import numpy as np
 import pytest
-
-
 from mindspore import Tensor
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
+from mindarmour.attacks.black.black_model import BlackModel
 from mindarmour.attacks.black.pointwise_attack import PointWiseAttack
 from mindarmour.utils.logger import LogUtil
-from mindarmour.attacks.black.black_model import BlackModel
 
 sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)),
                              "../../../../../"))
@@ -81,7 +80,7 @@ def test_pointwise_attack_method():
     LOGGER.info(TAG, 'original sample predict labels are :{}'.format(pre_label))
     LOGGER.info(TAG, 'true labels are: {}'.format(labels))
     attack = PointWiseAttack(model, sparse=True, is_targeted=False)
-    is_adv, adv_data, query_times = attack.generate(input_np, pre_label)
+    is_adv, adv_data, _ = attack.generate(input_np, pre_label)
     LOGGER.info(TAG, 'adv sample predict labels are: {}'
                 .format(np.argmax(model.predict(adv_data), axis=1)))
 

tests/ut/python/attacks/test_gradient_method.py

@@ -233,10 +233,6 @@ def test_assert_error():
     """
     Random least likely class method unit test.
     """
-    input_np = np.asarray([[0.1, 0.2, 0.7]], np.float32)
-    label = np.asarray([2], np.int32)
-    label = np.eye(3)[label].astype(np.float32)
-
     with pytest.raises(ValueError) as e:
         assert RandomLeastLikelyClassMethod(Net(), eps=0.05, alpha=0.21)
     assert str(e.value) == 'eps must be larger than alpha!'

tests/ut/python/attacks/test_iterative_gradient_method.py

@@ -134,7 +134,6 @@ def test_diverse_input_iterative_method():
     label = np.asarray([2], np.int32)
     label = np.eye(3)[label].astype(np.float32)
 
-    for i in range(5):
     attack = DiverseInputIterativeMethod(Net())
     ms_adv_x = attack.generate(input_np, label)
     assert np.any(ms_adv_x != input_np), 'Diverse input iterative method: generate' \
@@ -155,7 +154,6 @@ def test_momentum_diverse_input_iterative_method():
     label = np.asarray([2], np.int32)
     label = np.eye(3)[label].astype(np.float32)
 
-    for i in range(5):
     attack = MomentumDiverseInputIterativeMethod(Net())
     ms_adv_x = attack.generate(input_np, label)
     assert np.any(ms_adv_x != input_np), 'Momentum diverse input iterative method: ' \

tests/ut/python/attacks/test_lbfgs.py

@@ -14,11 +14,11 @@
 """
 LBFGS-Attack test.
 """
+import os
 import sys
+
 import numpy as np
 import pytest
-import os
-
 from mindspore import context
 from mindspore.train.serialization import load_checkpoint, load_param_into_net
 
@@ -69,4 +69,4 @@ def test_lbfgs_attack():
 
     attack = LBFGS(net, is_targeted=True)
     LOGGER.debug(TAG, 'target_np is :{}'.format(target_np[0]))
-    adv_data = attack.generate(input_np, target_np)
+    _ = attack.generate(input_np, target_np)

tests/ut/python/defenses/mock_net.py

@@ -18,10 +18,8 @@ import numpy as np
 
 from mindspore import nn
 from mindspore import Tensor
-from mindspore.nn import Cell
 from mindspore.nn import WithLossCell, TrainOneStepCell
 from mindspore.nn.optim.momentum import Momentum
-from mindspore.ops import operations as P
 from mindspore import context
 from mindspore.common.initializer import TruncatedNormal
 
@@ -58,7 +56,7 @@ class Net(nn.Cell):
         self.fc3 = fc_with_initialize(84, 10)
         self.relu = nn.ReLU()
         self.max_pool2d = nn.MaxPool2d(kernel_size=2, stride=2)
-        self.reshape = P.Reshape()
+        self.flatten = nn.Flatten()
 
     def construct(self, x):
         x = self.conv1(x)
@@ -67,7 +65,7 @@ class Net(nn.Cell):
         x = self.conv2(x)
         x = self.relu(x)
         x = self.max_pool2d(x)
-        x = self.reshape(x, (-1, 16*5*5))
+        x = self.flatten(x)
         x = self.fc1(x)
         x = self.relu(x)
         x = self.fc2(x)
@@ -75,6 +73,7 @@ class Net(nn.Cell):
         x = self.fc3(x)
         return x
 
+
 if __name__ == '__main__':
     num_classes = 10
     batch_size = 32
@@ -104,4 +103,3 @@ if __name__ == '__main__':
     train_net.set_train()
 
     train_net(Tensor(inputs_np), Tensor(labels_np))
-

tests/ut/python/defenses/test_ad.py

@@ -14,20 +14,19 @@
 """
 Adversarial defense test.
 """
-import numpy as np
-import pytest
 import logging
 
-from mindspore import nn
+import numpy as np
+import pytest
 from mindspore import Tensor
 from mindspore import context
+from mindspore import nn
 from mindspore.nn.optim.momentum import Momentum
 
+from mock_net import Net
 from mindarmour.defenses.adversarial_defense import AdversarialDefense
 from mindarmour.utils.logger import LogUtil
 
-from mock_net import Net
-
 LOGGER = LogUtil.get_instance()
 TAG = 'Ad_Test'
 

tests/ut/python/defenses/test_ead.py

@@ -14,22 +14,21 @@
 """
 ensemble adversarial defense test.
 """
-import numpy as np
-import pytest
 import logging
 
-from mindspore import nn
+import numpy as np
+import pytest
 from mindspore import context
+from mindspore import nn
 from mindspore.nn.optim.momentum import Momentum
 
+from mock_net import Net
 from mindarmour.attacks.gradient_method import FastGradientSignMethod
 from mindarmour.attacks.iterative_gradient_method import \
     ProjectedGradientDescent
 from mindarmour.defenses.adversarial_defense import EnsembleAdversarialDefense
 from mindarmour.utils.logger import LogUtil
 
-from mock_net import Net
-
 LOGGER = LogUtil.get_instance()
 TAG = 'Ead_Test'
 
@@ -54,7 +53,7 @@ def test_ead():
     if not sparse:
         labels = np.eye(num_classes)[labels].astype(np.float32)
 
-    net = Net()
+    net = SimpleNet()
     loss_fn = nn.SoftmaxCrossEntropyWithLogits(is_grad=False, sparse=sparse)
     optimizer = Momentum(net.trainable_params(), 0.001, 0.9)
 

tests/ut/python/defenses/test_nad.py

@@ -14,20 +14,19 @@
 """
 Natural adversarial defense test.
 """
-import numpy as np
-import pytest
 import logging
 
-from mindspore import nn
+import numpy as np
+import pytest
 from mindspore import context
+from mindspore import nn
 from mindspore.nn.optim.momentum import Momentum
 
+from mock_net import Net
 from mindarmour.defenses.natural_adversarial_defense import \
     NaturalAdversarialDefense
 from mindarmour.utils.logger import LogUtil
 
-from mock_net import Net
-
 LOGGER = LogUtil.get_instance()
 TAG = 'Nad_Test'
 

tests/ut/python/defenses/test_pad.py

@@ -14,20 +14,19 @@
 """
 Projected adversarial defense test.
 """
-import numpy as np
-import pytest
 import logging
 
-from mindspore import nn
+import numpy as np
+import pytest
 from mindspore import context
+from mindspore import nn
 from mindspore.nn.optim.momentum import Momentum
 
+from mock_net import Net
 from mindarmour.defenses.projected_adversarial_defense import \
     ProjectedAdversarialDefense
 from mindarmour.utils.logger import LogUtil
 
-from mock_net import Net
-
 LOGGER = LogUtil.get_instance()
 TAG = 'Pad_Test'
 

tests/ut/python/detectors/black/test_similarity_detector.py

@@ -98,4 +98,3 @@ def test_similarity_detector():
                       1561, 1612, 1663, 1714, 1765,
                       1816, 1867, 1918, 1969]
     assert np.all(detector.get_detected_queries() == expected_value)
-

tests/ut/python/detectors/test_spatial_smoothing.py

@@ -111,6 +111,3 @@ def test_spatial_smoothing_diff():
                                0.38254014, 0.543059, 0.06452079, 0.36902517,
                                1.1845329, 0.3870097])
     assert np.allclose(diffs, expected_value, 0.0001, 0.0001)
-
-
-

tests/ut/python/evaluations/test_attack_eval.py

@@ -81,7 +81,7 @@ def test_value_error():
 @pytest.mark.platform_x86_ascend_training
 @pytest.mark.env_card
 @pytest.mark.component_mindarmour
-def test_value_error():
+def test_empty_input_error():
     # prepare test data
     np.random.seed(1024)
     inputs = np.array([])

tests/ut/python/evaluations/test_radar_metric.py

@@ -30,7 +30,7 @@ def test_radar_metric():
     metrics_labels = ['before', 'after']
 
     # create obj
-    rm = RadarMetric(metrics_name, metrics_data, metrics_labels, title='',
+    _ = RadarMetric(metrics_name, metrics_data, metrics_labels, title='',
                      scale='sparse')
 
 
@@ -54,4 +54,3 @@ def test_value_error():
     with pytest.raises(ValueError):
         assert RadarMetric(['MR', 'ACAC', 'ASS'], metrics_data, metrics_labels,
                            title='', scale='bad_s')
-

tests/ut/python/fuzzing/test_fuzzing.py

@@ -16,18 +16,15 @@ Model-fuzz coverage test.
 """
 import numpy as np
 import pytest
-import sys
-
-from mindspore.train import Model
-from mindspore import nn
-from mindspore.ops import operations as P
 from mindspore import context
+from mindspore import nn
 from mindspore.common.initializer import TruncatedNormal
+from mindspore.ops import operations as P
+from mindspore.train import Model
 
-from mindarmour.utils.logger import LogUtil
-from mindarmour.fuzzing.model_coverage_metrics import ModelCoverageMetrics
 from mindarmour.fuzzing.fuzzing import Fuzzing
-
+from mindarmour.fuzzing.model_coverage_metrics import ModelCoverageMetrics
+from mindarmour.utils.logger import LogUtil
 
 LOGGER = LogUtil.get_instance()
 TAG = 'Fuzzing test'
@@ -116,17 +113,18 @@ def test_fuzzing_ascend():
     model_fuzz_test = Fuzzing(initial_seeds, model, training_data, 5,
                               max_seed_num=10)
     failed_tests = model_fuzz_test.fuzzing()
-    model_coverage_test.test_adequacy_coverage_calculate(
-        np.array(failed_tests).astype(np.float32))
-    LOGGER.info(TAG, 'KMNC of this test is : %s',
-                model_coverage_test.get_kmnc())
+    if failed_tests:
+        model_coverage_test.test_adequacy_coverage_calculate(np.array(failed_tests).astype(np.float32))
+        LOGGER.info(TAG, 'KMNC of this test is : %s', model_coverage_test.get_kmnc())
+    else:
+        LOGGER.info(TAG, 'Fuzzing test identifies none failed test')
 
 
 @pytest.mark.level0
 @pytest.mark.platform_x86_cpu
 @pytest.mark.env_onecard
 @pytest.mark.component_mindarmour
-def test_fuzzing_ascend():
+def test_fuzzing_CPU():
     context.set_context(mode=context.GRAPH_MODE, device_target="CPU")
     # load network
     net = Net()
@@ -155,7 +153,8 @@ def test_fuzzing_ascend():
     model_fuzz_test = Fuzzing(initial_seeds, model, training_data, 5,
                               max_seed_num=10)
     failed_tests = model_fuzz_test.fuzzing()
-    model_coverage_test.test_adequacy_coverage_calculate(
-        np.array(failed_tests).astype(np.float32))
-    LOGGER.info(TAG, 'KMNC of this test is : %s',
-                model_coverage_test.get_kmnc())
+    if failed_tests:
+        model_coverage_test.test_adequacy_coverage_calculate(np.array(failed_tests).astype(np.float32))
+        LOGGER.info(TAG, 'KMNC of this test is : %s', model_coverage_test.get_kmnc())
+    else:
+        LOGGER.info(TAG, 'Fuzzing test identifies none failed test')

tests/ut/python/utils/test_image_transform.py

@@ -35,7 +35,7 @@ def test_contrast():
     mode = 'L'
     trans = Contrast(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -47,7 +47,7 @@ def test_brightness():
     mode = 'L'
     trans = Brightness(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -61,7 +61,7 @@ def test_blur():
     mode = 'L'
     trans = Blur(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -75,7 +75,7 @@ def test_noise():
     mode = 'L'
     trans = Noise(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -89,7 +89,7 @@ def test_translate():
     mode = 'L'
     trans = Translate(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -103,7 +103,7 @@ def test_shear():
     mode = 'L'
     trans = Shear(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -117,7 +117,7 @@ def test_scale():
     mode = 'L'
     trans = Scale(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
+    _ = trans.transform()
 
 
 @pytest.mark.level0
@@ -131,6 +131,4 @@ def test_rotate():
     mode = 'L'
     trans = Rotate(image, mode)
     trans.random_param()
-    trans_image = trans.transform()
-
-
+    _ = trans.transform()