[CodeStyle][F401] remove unused imports in...

[CodeStyle][F401] remove unused imports in python_paddle/nn_tensor_reader_tests_distributed_distribution_dataset_utils. (#46721)

python/paddle/dataset/cifar.py

@@ -27,7 +27,6 @@ images per class.
 
 """
 
-import itertools
 import numpy
 import paddle.dataset.common
 import paddle.utils.deprecated as deprecated

python/paddle/dataset/common.py

@@ -17,7 +17,6 @@ import hashlib
 import os
 import errno
 import shutil
-import six
 import sys
 import importlib
 import paddle.dataset
@@ -55,7 +54,6 @@ def must_mkdirs(path):
     except OSError as exc:
         if exc.errno != errno.EEXIST:
             raise
-        pass
 
 
 must_mkdirs(DATA_HOME)

python/paddle/dataset/conll05.py

@@ -22,7 +22,6 @@ to initialize SRL model.
 
 import tarfile
 import gzip
-import itertools
 import paddle.dataset.common
 import paddle.compat as cpt
 import paddle.utils.deprecated as deprecated

python/paddle/dataset/flowers.py

@@ -29,24 +29,16 @@ http://www.robots.ox.ac.uk/~vgg/publications/papers/nilsback08.{pdf,ps.gz}.
 
 """
 
-import itertools
 import functools
 from .common import download
 import tarfile
 
 from paddle.dataset.image import load_image_bytes
-from paddle.dataset.image import load_image
 from paddle.dataset.image import simple_transform
-from paddle.dataset.image import batch_images_from_tar
 
 from paddle.reader import map_readers, xmap_readers
-from paddle import compat as cpt
 import paddle.utils.deprecated as deprecated
-import os
-import numpy as np
 from multiprocessing import cpu_count
-import six
-from six.moves import cPickle as pickle
 from paddle.utils import try_import
 
 __all__ = []

python/paddle/dataset/movielens.py

@@ -27,7 +27,6 @@ import zipfile
 import paddle.dataset.common
 import paddle.utils.deprecated as deprecated
 import re
-import random
 import functools
 import six
 import paddle.compat as cpt

python/paddle/dataset/wmt14.py

@@ -22,7 +22,6 @@ parse training set and test set into paddle reader creators.
 
 import six
 import tarfile
-import gzip
 
 import paddle.dataset.common
 import paddle.compat as cpt

python/paddle/dataset/wmt16.py

@@ -31,7 +31,6 @@ Multi30K: Multilingual English-German Image Descriptions.
 import os
 import six
 import tarfile
-import gzip
 from collections import defaultdict
 
 import paddle

python/paddle/distribution/categorical.py

@@ -12,21 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import math
-import warnings
-
 import numpy as np
 import paddle
-from paddle import _C_ops, _legacy_C_ops
 from paddle.distribution import distribution
-from paddle.fluid import core
-from paddle.fluid.data_feeder import (check_dtype, check_type,
-                                      check_variable_and_dtype, convert_dtype)
-from paddle.fluid.framework import _non_static_mode, in_dygraph_mode
-from paddle.fluid.layers import (control_flow, elementwise_add, elementwise_div,
-                                 elementwise_mul, elementwise_sub, nn, ops,
-                                 tensor)
-from paddle.tensor import arange, concat, gather_nd, multinomial
+from paddle.fluid.data_feeder import (check_type, convert_dtype)
+from paddle.fluid.framework import _non_static_mode
+from paddle.fluid.layers import (ops, tensor)
+from paddle.tensor import multinomial
 
 
 class Categorical(distribution.Distribution):

python/paddle/distribution/distribution.py

@@ -19,20 +19,14 @@
 #            'sampling_id',
 #            'Uniform']
 
-import math
 import warnings
 
 import numpy as np
 import paddle
 from paddle import _C_ops, _legacy_C_ops
-from paddle.fluid import core
-from paddle.fluid.data_feeder import (check_dtype, check_type,
-                                      check_variable_and_dtype, convert_dtype)
+from paddle.fluid.data_feeder import (check_variable_and_dtype, convert_dtype)
 from paddle.fluid.framework import _non_static_mode, in_dygraph_mode, _in_legacy_dygraph
-from paddle.fluid.layers import (control_flow, elementwise_add, elementwise_div,
-                                 elementwise_mul, elementwise_sub, nn, ops,
-                                 tensor)
-from paddle.tensor import arange, concat, gather_nd, multinomial
+from paddle.fluid.layers import tensor
 
 
 class Distribution(object):

python/paddle/distribution/exponential_family.py

@@ -14,7 +14,7 @@
 
 import paddle
 from paddle.distribution import distribution
-from paddle.fluid.framework import _non_static_mode, in_dygraph_mode
+from paddle.fluid.framework import _non_static_mode
 
 
 class ExponentialFamily(distribution.Distribution):

python/paddle/distribution/kl.py

@@ -24,7 +24,7 @@ from paddle.distribution.normal import Normal
 from paddle.distribution.lognormal import LogNormal
 from paddle.distribution.uniform import Uniform
 from paddle.distribution.laplace import Laplace
-from paddle.fluid.framework import _non_static_mode, in_dygraph_mode
+from paddle.fluid.framework import _non_static_mode
 
 __all__ = ["register_kl", "kl_divergence"]
 

python/paddle/distribution/multinomial.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import collections
-
 import paddle
 from paddle.distribution import categorical, distribution
 try:

python/paddle/distribution/normal.py

@@ -13,19 +13,13 @@
 # limitations under the License.
 
 import math
-import warnings
-
 import numpy as np
 import paddle
-from paddle import _C_ops, _legacy_C_ops
 from paddle.distribution import distribution
-from paddle.fluid import core
-from paddle.fluid.data_feeder import (check_dtype, check_type,
-                                      check_variable_and_dtype, convert_dtype)
-from paddle.fluid.framework import _non_static_mode, in_dygraph_mode
-from paddle.fluid.layers import (control_flow, elementwise_add, elementwise_div,
-                                 elementwise_mul, elementwise_sub, nn, ops,
-                                 tensor)
+from paddle.fluid.data_feeder import (check_type, convert_dtype)
+from paddle.fluid.framework import _non_static_mode
+from paddle.fluid.layers import (elementwise_add, elementwise_div,
+                                 elementwise_sub, nn, ops, tensor)
 try:
     from collections.abc import Iterable
 except:

python/paddle/distribution/transform.py

@@ -15,7 +15,6 @@
 import enum
 import functools
 import math
-import numbers
 import operator
 import typing
 

python/paddle/distribution/uniform.py

@@ -12,20 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import math
-import warnings
-
 import numpy as np
 from paddle import _C_ops, _legacy_C_ops
 from paddle.distribution import distribution
-from paddle.fluid import core
-from paddle.fluid.data_feeder import (check_dtype, check_type,
-                                      check_variable_and_dtype, convert_dtype)
+from paddle.fluid.data_feeder import (check_type, convert_dtype)
 from paddle.fluid.framework import _non_static_mode, in_dygraph_mode, _in_legacy_dygraph
-from paddle.fluid.layers import (control_flow, elementwise_add, elementwise_div,
-                                 elementwise_mul, elementwise_sub, nn, ops,
-                                 tensor)
-from paddle.tensor import arange, concat, gather_nd, multinomial
+from paddle.fluid.layers import (elementwise_add, elementwise_div,
+                                 elementwise_sub, nn, tensor)
 
 
 class Uniform(distribution.Distribution):

python/paddle/nn/functional/activation.py

@@ -18,12 +18,10 @@ from ...tensor.math import tanh_  # noqa: F401
 
 from ...fluid.dygraph.inplace_utils import inplace_apis_in_dygraph_only
 from ...tensor.manipulation import chunk
-from ...tensor.math import multiply
 
-import warnings
 from ...fluid.layer_helper import LayerHelper
 from ...fluid.framework import convert_np_dtype_to_dtype_
-from ...fluid.framework import _in_legacy_dygraph, in_dygraph_mode, _non_static_mode
+from ...fluid.framework import _in_legacy_dygraph, in_dygraph_mode
 from ...fluid.data_feeder import check_variable_and_dtype, check_dtype
 import paddle
 from paddle import _C_ops, _legacy_C_ops, in_dynamic_mode

python/paddle/nn/functional/common.py

@@ -12,14 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import warnings
 import paddle
 from paddle.fluid.layer_helper import LayerHelper
 from paddle.fluid.layers.tensor import fill_constant
 from ...tensor import concat
 from ...tensor.creation import zeros
 from paddle.static import Variable
-from ...fluid import dygraph_utils
 # TODO: define the common functions to build a neural network
 from ...tensor.manipulation import squeeze
 from ...tensor.manipulation import unsqueeze
@@ -27,9 +25,7 @@ from ...tensor import clip
 from ...tensor import sum
 from ...tensor import sqrt
 from ...fluid.data_feeder import check_variable_and_dtype, check_dtype, check_type
-from ...fluid.framework import _varbase_creator, _in_legacy_dygraph, in_dygraph_mode, _non_static_mode
-
-from ...fluid import dygraph_utils
+from ...fluid.framework import _in_legacy_dygraph, _non_static_mode, in_dygraph_mode
 
 from paddle import _C_ops, _legacy_C_ops
 from paddle.framework import in_dynamic_mode

python/paddle/nn/functional/conv.py

@@ -12,16 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import numpy as np
 from ...device import get_cudnn_version
 from ...static import Variable
-from ...fluid import dygraph_utils
 from ...fluid.layers.utils import convert_to_list, _is_symmetric_padding, _contain_var, _convert_to_tensor_list
 from ...fluid.data_feeder import check_variable_and_dtype, check_dtype
-from ...framework import ParamAttr
 from ...fluid.layer_helper import LayerHelper
 from ...tensor.manipulation import unsqueeze, squeeze
-from ...tensor.math import add
 from ...fluid.layers import nn
 from paddle import _C_ops, _legacy_C_ops
 from paddle import get_flags
@@ -34,7 +30,6 @@ from paddle.device import is_compiled_with_rocm
 from paddle.fluid.framework import _global_flags
 from paddle.fluid.framework import _in_legacy_dygraph
 from paddle.fluid.framework import in_dygraph_mode
-from paddle.fluid.framework import _non_static_mode
 
 __all__ = []
 

python/paddle/nn/functional/extension.py

@@ -19,7 +19,6 @@ from ...fluid.data_feeder import check_dtype
 from ...fluid.layer_helper import LayerHelper
 from ...static import Variable
 from ...tensor.creation import assign
-from ...fluid import dygraph_utils
 from ...tensor.layer_function_generator import templatedoc
 from paddle import in_dynamic_mode
 from paddle import _C_ops, _legacy_C_ops

python/paddle/nn/functional/input.py

@@ -12,12 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import warnings
 from ...static import Variable
 from ...fluid.layer_helper import LayerHelper
-from ...fluid.data_feeder import check_variable_and_dtype, check_dtype
+from ...fluid.data_feeder import check_variable_and_dtype
 from paddle import _C_ops, _legacy_C_ops
-from paddle import in_dynamic_mode
 from ...fluid.framework import _in_legacy_dygraph, in_dygraph_mode
 
 __all__ = []

python/paddle/nn/functional/loss.py

@@ -17,7 +17,6 @@ import paddle
 from ...fluid.data_feeder import check_variable_and_dtype
 
 # TODO: define loss functions of neural network
-import numpy as np
 import paddle
 import paddle.fluid as fluid
 from ...fluid.layers.nn import _elementwise_op_in_dygraph

python/paddle/nn/functional/norm.py

@@ -17,14 +17,11 @@ import paddle
 import paddle.fluid as fluid
 from ...fluid.data_feeder import check_variable_and_dtype, check_type
 from ...fluid.layer_helper import LayerHelper
-from ...framework import create_parameter
-from ..initializer import Constant
-from ...framework import ParamAttr
 from ...fluid import dygraph_utils
 import numbers
 from paddle import _C_ops, _legacy_C_ops
 from paddle import in_dynamic_mode
-from paddle.fluid.framework import core, _non_static_mode, in_dygraph_mode, _in_legacy_dygraph
+from paddle.fluid.framework import _in_legacy_dygraph, in_dygraph_mode
 
 __all__ = []
 

python/paddle/nn/functional/pooling.py

@@ -18,7 +18,6 @@ from ...tensor.manipulation import unsqueeze, squeeze
 from ...fluid.data_feeder import check_type, check_variable_and_dtype
 from paddle import _C_ops, _legacy_C_ops
 from paddle import in_dynamic_mode
-from paddle.fluid import core
 from paddle.fluid.framework import _in_legacy_dygraph, Variable
 from paddle.fluid.framework import in_dygraph_mode, _non_static_mode
 

python/paddle/nn/functional/sparse_attention.py

@@ -12,11 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import warnings
-import paddle
-from ...fluid.framework import default_main_program
 from paddle.fluid.layer_helper import LayerHelper
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _legacy_C_ops
 from paddle import in_dynamic_mode
 
 

python/paddle/nn/functional/vision.py

@@ -16,8 +16,6 @@ from ...device import get_cudnn_version
 from ...static import Variable
 from ...fluid.layer_helper import LayerHelper
 from ...fluid.data_feeder import check_variable_and_dtype
-from ...fluid import dygraph_utils
-import numpy as np
 from paddle import _C_ops, _legacy_C_ops
 from ...device import is_compiled_with_rocm
 from paddle import in_dynamic_mode

python/paddle/nn/initializer/dirac.py

@@ -19,7 +19,7 @@ from ...fluid import framework
 from ...fluid.framework import _current_expected_place
 from paddle import in_dynamic_mode
 from paddle.utils import unique_name
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _C_ops
 from ... import fluid
 
 __all__ = []

python/paddle/nn/initializer/orthogonal.py

@@ -15,10 +15,9 @@
 from ...fluid.initializer import Initializer
 from ...fluid.data_feeder import check_variable_and_dtype
 from ...fluid import framework
-from ...tensor import diag, transpose, sign, qr, reshape
 from paddle.utils import unique_name
 from ...fluid.dygraph import no_grad
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _C_ops
 
 __all__ = []
 

python/paddle/nn/layer/activation.py

@@ -14,7 +14,6 @@
 
 # TODO: define activation functions of neural network
 
-from ...framework import ParamAttr
 from ..initializer import Constant
 from paddle.framework import get_default_dtype
 from .. import functional as F

python/paddle/nn/layer/common.py

@@ -16,7 +16,6 @@
 import paddle
 from ...fluid.dygraph import Flatten  # noqa: F401
 from .. import functional as F
-from ...fluid.framework import _dygraph_tracer
 from paddle.nn import Layer
 from paddle import in_dynamic_mode
 

python/paddle/nn/layer/loss.py

@@ -14,11 +14,10 @@
 # limitations under the License.
 
 # TODO: define loss functions of neural network
-import numpy as np
 import paddle.fluid as fluid
 import paddle
 from .. import functional as F
-from paddle.fluid.framework import _varbase_creator, in_dygraph_mode, _in_legacy_dygraph
+from paddle.fluid.framework import in_dygraph_mode
 from .. import Layer
 from paddle import in_dynamic_mode
 

python/paddle/nn/layer/norm.py

@@ -27,16 +27,14 @@
 
 # TODO: define normalization api
 
-import six
-
 from ...fluid.dygraph import BatchNorm  # noqa: F401
 from ...fluid.dygraph import SpectralNorm  # noqa: F401
 
-from ...framework import get_default_dtype, set_default_dtype, _non_static_mode
+from ...framework import get_default_dtype
 
 from ..initializer import Constant
 from ...framework import ParamAttr
-from ...fluid.data_feeder import check_variable_and_dtype, check_type
+from ...fluid.data_feeder import check_variable_and_dtype
 from ...fluid import dygraph_utils
 
 from ..functional import batch_norm, layer_norm, instance_norm

python/paddle/nn/layer/pooling.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ...fluid.layer_helper import LayerHelper
 from .. import functional as F
 from .. import Layer
 

python/paddle/nn/layer/rnn.py

@@ -12,26 +12,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import copy
-import collections
-import itertools
 import six
 import math
 import sys
-import warnings
-from functools import partial, reduce
+from functools import reduce
 
 import numpy as np
 import paddle
-import paddle.fluid as fluid
 from paddle import framework
-from paddle.device import get_device, get_cudnn_version
 from paddle.nn import functional as F
 from paddle.nn import initializer as I
 from paddle.nn import Layer, LayerList
 from paddle.fluid.layers import utils
-from paddle.fluid.layers.utils import map_structure, flatten, pack_sequence_as
-from paddle.fluid.data_feeder import convert_dtype
+from paddle.fluid.layers.utils import flatten, map_structure
 from paddle import _C_ops, _legacy_C_ops
 from paddle import in_dynamic_mode
 from paddle.fluid.framework import in_dygraph_mode

python/paddle/nn/quant/lsq.py

@@ -13,21 +13,12 @@
 # limitations under the License.
 
 import paddle
-from paddle.framework import core
-from paddle.fluid import dygraph_utils
 from paddle.utils import unique_name
 from paddle.framework import ParamAttr
-from paddle.fluid.framework import _varbase_creator
 from paddle.nn.initializer import Constant
-from paddle.fluid.data_feeder import check_variable_and_dtype
-from paddle.nn import functional as F
-import logging
-from paddle.fluid.log_helper import get_logger
-from paddle import in_dynamic_mode
 from paddle.nn import Layer
 from paddle.autograd import PyLayer
 import math
-import copy
 
 
 def round(x):

python/paddle/nn/quant/quant_layers.py

@@ -14,7 +14,6 @@
 
 import paddle
 from paddle.framework import core
-from paddle.fluid import dygraph_utils
 from paddle.utils import unique_name
 from paddle.framework import ParamAttr
 from paddle.fluid.framework import _varbase_creator
@@ -23,7 +22,7 @@ from paddle.fluid.data_feeder import check_variable_and_dtype
 from paddle.nn import functional as F
 import logging
 from paddle.fluid.log_helper import get_logger
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _legacy_C_ops
 from paddle import in_dynamic_mode
 from paddle.nn import Layer
 from paddle.nn.quant.lsq import FakeQuantActLSQPlus, FakeQuantWeightLSQPlus

python/paddle/nn/utils/spectral_norm_hook.py

@@ -12,9 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import math
-import numpy as np
-
 import paddle
 from ..layer.conv import Conv1DTranspose, Conv2DTranspose, Conv3DTranspose
 from ..layer.common import Linear

python/paddle/nn/utils/transform_parameters.py

@@ -16,7 +16,7 @@ from functools import reduce
 
 import paddle
 from paddle.fluid.framework import dygraph_only, _dygraph_tracer, _varbase_creator, in_dygraph_mode
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _C_ops
 
 
 #input==output, inplace strategy of reshape has no cost almostly

python/paddle/nn/utils/weight_norm_hook.py

@@ -12,14 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import paddle
-import numpy as np
-from ... import fluid
-from ...fluid import dygraph
 from ...fluid import layers as F
 from ...fluid.layer_helper import LayerHelper
 from ...fluid.data_feeder import check_variable_and_dtype
 from ...framework import in_dygraph_mode
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _C_ops
 
 __all__ = []
 

python/paddle/reader/decorator.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 
 from threading import Thread
-import subprocess
 import multiprocessing
 import six
 import sys
@@ -26,9 +25,7 @@ from six.moves import map
 from six.moves import zip
 import itertools
 import random
-import zlib
 
-import paddle.compat as cpt
 from paddle.fluid.reader import QUEUE_GET_TIMEOUT
 
 __all__ = []

python/paddle/tensor/array.py

@@ -14,7 +14,6 @@
 
 # Define functions about array.
 
-import paddle
 from ..static import Variable
 from ..framework import LayerHelper, core, _non_static_mode
 from ..fluid.data_feeder import check_type

python/paddle/tensor/attribute.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ..framework import core, _non_static_mode
+from ..framework import core
 from ..framework import LayerHelper
 from ..fluid.data_feeder import check_variable_and_dtype
 from ..fluid.data_feeder import check_type

python/paddle/tensor/creation.py

@@ -19,12 +19,11 @@ from paddle.common_ops_import import fill_constant
 from ..fluid.layers import utils
 from ..static import Variable, device_guard
 from ..framework import _current_expected_place, _get_paddle_place
-from ..framework import dygraph_only
 from ..framework import core
 from ..framework import in_dygraph_mode, _non_static_mode
 from ..framework import LayerHelper
 from ..fluid.data_feeder import check_variable_and_dtype, check_type, check_dtype, convert_dtype
-from ..framework import convert_np_dtype_to_dtype_, _varbase_creator, OpProtoHolder
+from ..framework import convert_np_dtype_to_dtype_
 # TODO: define functions to get create a tensor
 import paddle
 from paddle import _C_ops, _legacy_C_ops

python/paddle/tensor/einsum.py

@@ -16,15 +16,15 @@ import itertools
 import numpy as np
 import re
 
-from .linalg import dot, matmul, transpose
+from .linalg import matmul, transpose
 from .manipulation import squeeze, unsqueeze, reshape
 from .math import multiply
 from .math import sum as paddle_sum
 from ..fluid.framework import _in_legacy_dygraph
 from paddle import _C_ops, _legacy_C_ops
-from ..fluid.data_feeder import check_variable_and_dtype, check_type, check_dtype
+from ..fluid.data_feeder import check_type, check_variable_and_dtype
 from ..fluid.layer_helper import LayerHelper
-from ..fluid.framework import _non_static_mode, in_dygraph_mode, _in_legacy_dygraph
+from ..fluid.framework import _in_legacy_dygraph, in_dygraph_mode
 import collections
 import string
 import opt_einsum

python/paddle/tensor/layer_function_generator.py

@@ -13,17 +13,15 @@
 # limitations under the License.
 
 import re
-import functools
 import warnings
 import string
 
 from six.moves import cStringIO
 from ..static import Variable
 from ..fluid.proto import framework_pb2
-from ..framework import OpProtoHolder, core, convert_np_dtype_to_dtype_, _non_static_mode, in_dygraph_mode, _in_legacy_dygraph
+from ..framework import OpProtoHolder, _non_static_mode, convert_np_dtype_to_dtype_, core, in_dygraph_mode
 from ..framework import LayerHelper
 from ..fluid.data_feeder import check_variable_and_dtype
-import paddle
 from paddle import _C_ops, _legacy_C_ops
 
 __all__ = []

python/paddle/tensor/linalg.py

@@ -14,7 +14,7 @@
 
 import numpy as np
 from ..framework import LayerHelper
-from ..framework import _varbase_creator, _dygraph_tracer, in_dygraph_mode, _non_static_mode
+from ..framework import _non_static_mode, in_dygraph_mode
 from ..fluid.data_feeder import check_variable_and_dtype, check_type, check_dtype
 from ..static import Variable
 from ..fluid.framework import _in_legacy_dygraph
@@ -24,7 +24,6 @@ from .logic import logical_not
 from .creation import full
 
 import paddle
-import warnings
 from paddle.common_ops_import import VarDesc
 from paddle import _C_ops, _legacy_C_ops
 

python/paddle/tensor/logic.py

@@ -23,7 +23,7 @@ if _in_eager_mode_:
 else:
     from ..framework import VarBase as Tensor
 
-from ..framework import in_dygraph_mode, _non_static_mode
+from ..framework import in_dygraph_mode
 from ..framework import LayerHelper
 from ..fluid.framework import _in_legacy_dygraph
 # TODO: define logic functions of a tensor

python/paddle/tensor/manipulation.py

@@ -14,16 +14,15 @@
 
 from collections import Counter
 
-from ..static import Variable, device_guard
+from ..static import Variable
 from ..framework import core, in_dygraph_mode
-from ..fluid.framework import _in_legacy_dygraph, _in_eager_without_dygraph_check, _non_static_mode
+from ..fluid.framework import _in_legacy_dygraph, _non_static_mode
 from ..framework import LayerHelper
-from ..framework import OpProtoHolder, convert_np_dtype_to_dtype_, dygraph_only
+from ..framework import convert_np_dtype_to_dtype_, dygraph_only
 from ..fluid.data_feeder import convert_dtype, check_variable_and_dtype, check_type, check_dtype
 from ..fluid.layers import utils
 import numpy as np
 # TODO: define functions to manipulate a tensor
-from ..fluid.layers.nn import _elementwise_op_in_dygraph
 from ..fluid.dygraph.inplace_utils import inplace_apis_in_dygraph_only
 import paddle
 from paddle import _C_ops, _legacy_C_ops

python/paddle/tensor/math.py

@@ -23,7 +23,7 @@ from paddle.common_ops_import import dygraph_utils
 
 from .manipulation import cast
 from .creation import _complex_to_real_dtype
-from .layer_function_generator import _generate_doc_string_, generate_activation_fn, generate_layer_fn
+from .layer_function_generator import generate_layer_fn
 
 import paddle
 from ..static import Variable

python/paddle/tensor/ops.py

@@ -12,14 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 from .layer_function_generator import generate_layer_fn, generate_activation_fn, generate_inplace_fn, add_sample_code
-from ..framework import core
-from ..framework import convert_np_dtype_to_dtype_
-from ..static import Variable
-from ..fluid.data_feeder import convert_dtype, check_variable_and_dtype, check_type, check_dtype
 from ..fluid.framework import in_dygraph_mode
-from .. import _C_ops, _legacy_C_ops
+from .. import _C_ops
 
 __deprecated_func_name__ = {
     'tanh_shrink': 'tanhshrink',

python/paddle/tensor/search.py

@@ -14,14 +14,12 @@
 import numpy as np
 import paddle
 from ..framework import LayerHelper, convert_np_dtype_to_dtype_
-from ..fluid.data_feeder import check_variable_and_dtype, check_type, check_dtype
-from ..fluid import layers
+from ..fluid.data_feeder import check_dtype, check_variable_and_dtype
 from ..framework import core, in_dygraph_mode, _non_static_mode
 from ..fluid.framework import _in_legacy_dygraph
 from paddle.common_ops_import import Variable
 from paddle.common_ops_import import VarDesc
 from paddle import _C_ops, _legacy_C_ops
-from .logic import logical_not
 
 # TODO: define searching & indexing functions of a tensor
 # from ..fluid.layers import has_inf  #DEFINE_ALIAS

python/paddle/tensor/stat.py

@@ -14,13 +14,12 @@
 
 # TODO: define statistical functions of a tensor
 
-import numpy as np
 from ..static import Variable
 from ..framework import LayerHelper
 from ..framework import core
 from paddle.fluid.framework import _in_legacy_dygraph, in_dygraph_mode
 from .search import where
-from ..fluid.data_feeder import convert_dtype, check_variable_and_dtype, check_type, check_dtype
+from ..fluid.data_feeder import check_type, check_variable_and_dtype
 from ..fluid.layers import utils
 import paddle
 from paddle import _C_ops, _legacy_C_ops

python/paddle/tensor/to_string.py

@@ -12,10 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import paddle
 import numpy as np
 from ..framework import core
-from paddle.fluid.data_feeder import convert_dtype, check_variable_and_dtype, check_type, check_dtype
+from paddle.fluid.data_feeder import check_type, convert_dtype
 
 __all__ = []
 

python/paddle/tests/dist_hapi_mnist_dynamic.py

@@ -15,7 +15,6 @@
 import unittest
 
 import numpy as np
-import contextlib
 
 import paddle
 import paddle.fluid as fluid

python/paddle/tests/dist_hapi_mnist_static.py

@@ -15,7 +15,6 @@
 import unittest
 
 import numpy as np
-import contextlib
 
 import paddle
 import paddle.fluid as fluid

python/paddle/tests/hapi_mnist_bf16_static.py

@@ -22,7 +22,6 @@ from paddle.vision.datasets import MNIST
 from paddle.vision.models import LeNet
 import paddle.static.amp as amp
 import random
-from paddle import callbacks
 import argparse
 import ast
 

python/paddle/tests/hubconf.py

@@ -14,7 +14,6 @@
 
 dependencies = ['paddle']
 
-import paddle
 from test_hapi_hub_model import MM as _MM
 
 

python/paddle/tests/test_audio_functions.py

@@ -15,7 +15,6 @@ import unittest
 
 import librosa
 import numpy as np
-import os
 import paddle
 
 import paddle.audio

python/paddle/tests/test_audio_logmel_feature.py

@@ -15,12 +15,10 @@ import unittest
 
 import librosa
 import numpy as np
-import os
 import paddle
 
 import paddle.audio
 import scipy
-from scipy import signal
 import itertools
 from parameterized import parameterized
 

python/paddle/tests/test_audio_mel_feature.py

@@ -15,11 +15,9 @@ import unittest
 
 import librosa
 import numpy as np
-import os
 import paddle
 
 import paddle.audio
-from scipy import signal
 import itertools
 from parameterized import parameterized
 

python/paddle/tests/test_callback_early_stop.py

@@ -13,8 +13,6 @@
 # limitations under the License.
 
 import unittest
-import time
-import random
 import tempfile
 import shutil
 import numpy as np
@@ -23,7 +21,6 @@ import paddle
 from paddle import Model
 from paddle.static import InputSpec
 from paddle.vision.models import LeNet
-from paddle.hapi.callbacks import config_callbacks
 from paddle.vision.datasets import MNIST
 from paddle.metric import Accuracy
 from paddle.nn.layer.loss import CrossEntropyLoss

python/paddle/tests/test_callback_reduce_lr_on_plateau.py

@@ -12,24 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import sys
 import unittest
-import time
-import random
-import tempfile
-import shutil
-import numpy as np
 
 import paddle
 import paddle.vision.transforms as T
 from paddle import Model
 from paddle.static import InputSpec
 from paddle.vision.models import LeNet
-from paddle.hapi.callbacks import config_callbacks
 from paddle.vision.datasets import MNIST
 from paddle.metric import Accuracy
 from paddle.nn.layer.loss import CrossEntropyLoss
-from paddle.fluid.framework import _test_eager_guard, _in_legacy_dygraph
+from paddle.fluid.framework import _test_eager_guard
 
 
 # Accelerate unittest

python/paddle/tests/test_callback_visualdl.py

@@ -14,22 +14,14 @@
 
 import sys
 import unittest
-import time
-import random
 import tempfile
 import shutil
-import numpy as np
 
 import paddle
-from paddle import Model
 from paddle.static import InputSpec
-from paddle.vision.models import LeNet
-from paddle.hapi.callbacks import config_callbacks
 import paddle.vision.transforms as T
 from paddle.vision.datasets import MNIST
-from paddle.metric import Accuracy
-from paddle.nn.layer.loss import CrossEntropyLoss
-from paddle.fluid.framework import _test_eager_guard, _in_legacy_dygraph
+from paddle.fluid.framework import _test_eager_guard
 
 
 class MnistDataset(MNIST):

python/paddle/tests/test_callbacks.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import sys
 import unittest
 import time
 import random
@@ -20,15 +19,11 @@ import tempfile
 import shutil
 import numpy as np
 
-import paddle
 from paddle import Model
 from paddle.static import InputSpec
 from paddle.vision.models import LeNet
 from paddle.hapi.callbacks import config_callbacks
-import paddle.vision.transforms as T
 from paddle.vision.datasets import MNIST
-from paddle.metric import Accuracy
-from paddle.nn.layer.loss import CrossEntropyLoss
 
 
 class MnistDataset(MNIST):

python/paddle/tests/test_dataset_uci_housing.py

@@ -13,11 +13,7 @@
 # limitations under the License.
 
 import unittest
-import os
 import numpy as np
-import tempfile
-import shutil
-import cv2
 
 from paddle.text.datasets import UCIHousing, WMT14
 

python/paddle/tests/test_dataset_voc.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import os
 import numpy as np
 
 from paddle.vision.datasets import voc2012, VOC2012

python/paddle/tests/test_datasets.py

@@ -22,7 +22,7 @@ import cv2
 import paddle.vision.transforms as T
 from paddle.vision.datasets import DatasetFolder, ImageFolder, MNIST, FashionMNIST, Flowers
 from paddle.dataset.common import _check_exists_and_download
-from paddle.fluid.framework import _test_eager_guard, _in_legacy_dygraph
+from paddle.fluid.framework import _test_eager_guard
 
 
 class TestFolderDatasets(unittest.TestCase):

python/paddle/tests/test_dlpack.py

@@ -18,7 +18,7 @@ import numpy as np
 import paddle
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from paddle.fluid.framework import _test_eager_guard, in_dygraph_mode
+from paddle.fluid.framework import _test_eager_guard
 
 
 class TestDLPack(unittest.TestCase):

python/paddle/tests/test_hapi_hub_model.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import paddle
 import paddle.nn as nn
 import paddle.nn.functional as F
 

python/paddle/tests/test_logger.py

@@ -14,7 +14,6 @@
 
 import unittest
 import os
-import numpy as np
 import shutil
 import tempfile
 

python/paddle/tests/test_metrics.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 import unittest
 import numpy as np
 

python/paddle/tests/test_model.py

@@ -22,7 +22,7 @@ import tempfile
 import paddle
 from paddle import fluid
 from paddle import to_tensor
-from paddle.nn import Conv2D, Linear, ReLU, Sequential, Softmax
+from paddle.nn import Conv2D, Linear, ReLU, Sequential
 
 from paddle import Model
 from paddle.static import InputSpec
@@ -34,7 +34,6 @@ import paddle.vision.models as models
 import paddle.fluid.dygraph.jit as jit
 from paddle.io import DistributedBatchSampler, Dataset
 from paddle.hapi.model import prepare_distributed_context
-from paddle.fluid.dygraph.jit import declarative
 from paddle.fluid.dygraph.dygraph_to_static.program_translator import ProgramTranslator
 
 

python/paddle/tests/test_read_file.py

@@ -14,7 +14,6 @@
 
 import os
 import cv2
-import shutil
 import unittest
 import tempfile
 import numpy as np

python/paddle/tests/test_transforms.py

@@ -21,7 +21,7 @@ import numpy as np
 from PIL import Image
 
 import paddle
-from paddle.vision import get_image_backend, set_image_backend, image_load
+from paddle.vision import image_load, set_image_backend
 from paddle.vision.datasets import DatasetFolder
 from paddle.vision.transforms import transforms
 import paddle.vision.transforms.functional as F

python/paddle/utils/cpp_extension/cpp_extension.py

@@ -22,11 +22,11 @@ from setuptools.command.easy_install import easy_install
 from setuptools.command.build_ext import build_ext
 from distutils.command.build import build
 
-from .extension_utils import find_cuda_home, find_rocm_home, normalize_extension_kwargs, add_compile_flag, run_cmd
+from .extension_utils import add_compile_flag, find_cuda_home, find_rocm_home, normalize_extension_kwargs
 from .extension_utils import is_cuda_file, prepare_unix_cudaflags, prepare_win_cudaflags
 from .extension_utils import _import_module_from_library, _write_setup_file, _jit_compile
 from .extension_utils import check_abi_compatibility, log_v, CustomOpInfo, parse_op_name_from
-from .extension_utils import clean_object_if_change_cflags, _reset_so_rpath, _get_fluid_path
+from .extension_utils import _reset_so_rpath, clean_object_if_change_cflags
 from .extension_utils import bootstrap_context, get_build_directory, add_std_without_repeat
 
 from .extension_utils import IS_WINDOWS, OS_NAME, MSVC_COMPILE_FLAGS, MSVC_COMPILE_FLAGS

python/paddle/utils/cpp_extension/extension_utils.py

@@ -397,7 +397,6 @@ def _get_core_name():
     """
     Return pybind DSO module name.
     """
-    import paddle
     ext_name = '.pyd' if IS_WINDOWS else '.so'
     return 'libpaddle' + ext_name
 

python/paddle/utils/dlpack.py

@@ -15,7 +15,7 @@
 import paddle
 from ..fluid.core import LoDTensor
 from ..fluid.framework import _non_static_mode
-from ..fluid.data_feeder import check_type, check_dtype, convert_dtype
+from ..fluid.data_feeder import check_type
 
 __all__ = [
     'to_dlpack',

python/paddle/utils/download.py

@@ -22,7 +22,6 @@ import hashlib
 import tarfile
 import zipfile
 import time
-from collections import OrderedDict
 
 try:
     from tqdm import tqdm

python/paddle/utils/install_check.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 import logging
 import numpy as np