[CodeStyle][F401] remove unused imports in python_paddle/nn_tensor_re…

…ader_tests_distributed_distribution_dataset_utils. (PaddlePaddle#46721)

python/paddle/dataset/cifar.py

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

python/paddle/dataset/common.py

@@ -17,7 +17,6 @@
 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 @@
 
 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 @@
 
 """
 
-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 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 @@
 
 import six
 import tarfile
-import gzip
 
 import paddle.dataset.common
 import paddle.compat as cpt

python/paddle/dataset/wmt16.py

@@ -31,7 +31,6 @@
 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.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 ...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

@@ -12,24 +12,20 @@
 # 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
 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.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.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 @@
 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.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 ...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 ...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.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