From 10b0b0b57cd454792a5011d53f98b528038e6dec Mon Sep 17 00:00:00 2001
From: Zhenghai Zhang <65210872+ccsuzzh@users.noreply.github.com>
Date: Thu, 21 Sep 2023 11:07:18 +0800
Subject: [PATCH] [CodeStyle][task 39] enable isort in `python/paddle/base`
 (part1) (#57413)

* enable isort rule in python/paddle/base

* fix bug

* fix bug

* fix bug
---
 pyproject.toml                                |  3 +-
 python/paddle/base/backward.py                | 19 ++++----
 python/paddle/base/compiler.py                | 19 ++++----
 python/paddle/base/data_feed_desc.py          |  3 +-
 python/paddle/base/data_feeder.py             | 13 +++---
 python/paddle/base/dataset.py                 |  6 ++-
 python/paddle/base/default_scope_funcs.py     |  3 +-
 python/paddle/base/dygraph/base.py            | 16 ++++---
 python/paddle/base/dygraph/math_op_patch.py   | 10 ++---
 .../base/dygraph/tensor_patch_methods.py      | 34 +++++++-------
 python/paddle/base/dygraph/tracer.py          |  3 +-
 python/paddle/base/dygraph_utils.py           |  3 +-
 python/paddle/base/executor.py                | 33 ++++++--------
 .../incubate/checkpoint/auto_checkpoint.py    | 11 ++---
 python/paddle/base/initializer.py             |  3 +-
 python/paddle/base/io.py                      |  1 +
 python/paddle/base/layer_helper.py            | 11 ++---
 python/paddle/base/layer_helper_base.py       |  9 ++--
 python/paddle/base/layers/io.py               |  6 +--
 .../base/layers/layer_function_generator.py   | 13 +++---
 python/paddle/base/layers/math_op_patch.py    | 11 +++--
 python/paddle/base/lod_tensor.py              |  3 +-
 python/paddle/base/multiprocess_utils.py      |  7 ++-
 python/paddle/base/param_attr.py              |  2 +-
 python/paddle/base/reader.py                  | 44 +++++++++----------
 python/paddle/base/trainer_desc.py            |  2 +-
 python/paddle/base/trainer_factory.py         | 26 ++++++-----
 python/paddle/base/unique_name.py             |  3 +-
 python/paddle/base/variable_index.py          | 24 +++++-----
 python/paddle/base/wrapped_decorator.py       |  3 +-
 30 files changed, 172 insertions(+), 172 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index e11ab2108c2be..8dd98b65873aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,8 +16,9 @@ skip = ["build", "third_party", "__init__.py"]
 extend_skip_glob = [
     # These files do not need to be formatted,
     # see .flake8 for more details
-    "python/paddle/base/**",
     "python/paddle/utils/gast/**",
+    "python/paddle/base/core.py",
+    "python/paddle/base/framework.py",
 ]
 
 [tool.ruff]
diff --git a/python/paddle/base/backward.py b/python/paddle/base/backward.py
index 563e423e0c7ea..1f3f67a98b640 100755
--- a/python/paddle/base/backward.py
+++ b/python/paddle/base/backward.py
@@ -12,23 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .proto import framework_pb2
-
-from paddle.base import framework as framework
-from paddle.base import program_guard
-from . import core
 import collections
 import copy
 import logging
-from . import unique_name
-from . import log_helper
-import paddle.base
-from .data_feeder import check_type
+import re
 import warnings
-
 from collections.abc import Sequence
 
-import re
+import paddle.base
+from paddle.base import framework as framework
+from paddle.base import program_guard
+
+from . import core, log_helper, unique_name
+from .data_feeder import check_type
+from .proto import framework_pb2
 
 __all__ = [
     'append_backward',
diff --git a/python/paddle/base/compiler.py b/python/paddle/base/compiler.py
index 69ae6f1d31344..3ee939920dc2b 100644
--- a/python/paddle/base/compiler.py
+++ b/python/paddle/base/compiler.py
@@ -14,9 +14,9 @@
 
 import sys
 import warnings
-from . import framework
-from .framework import cuda_places, cpu_places, xpu_places
-from . import core
+
+from . import core, framework
+from .framework import cpu_places, cuda_places, xpu_places
 
 __all__ = [
     'CompiledProgram',
@@ -399,10 +399,11 @@ def convert_concrete_program(
         """
         Convert the ConcreteProgram to IPUConcreteProgram.
         """
-        from ..base.dygraph.base import switch_to_static_graph
+        import paddle
+
         from ..base import backward
+        from ..base.dygraph.base import switch_to_static_graph
         from ..base.framework import device_guard
-        import paddle
 
         inputs = concrete_program.inputs
         outputs = concrete_program.outputs
@@ -508,14 +509,12 @@ def patch_program_cache(ipu_strategy):
         Returns:
             None
         """
+        from paddle.jit.dy2static import logging_utils
+        from paddle.jit.dy2static.partial_program import partial_program_from
         from paddle.jit.dy2static.program_translator import (
+            MAX_TRACED_PROGRAM_COUNT,
             CacheKey,
             ProgramCache,
-            MAX_TRACED_PROGRAM_COUNT,
-        )
-        from paddle.jit.dy2static import logging_utils
-        from paddle.jit.dy2static.partial_program import (
-            partial_program_from,
         )
 
         old_getter = ProgramCache.__getitem__
diff --git a/python/paddle/base/data_feed_desc.py b/python/paddle/base/data_feed_desc.py
index 8aa69890f1933..de1b00d090bb1 100644
--- a/python/paddle/base/data_feed_desc.py
+++ b/python/paddle/base/data_feed_desc.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle.base.proto import data_feed_pb2
 from google.protobuf import text_format
 
+from paddle.base.proto import data_feed_pb2
+
 __all__ = ['DataFeedDesc']
 
 
diff --git a/python/paddle/base/data_feeder.py b/python/paddle/base/data_feeder.py
index 78781a6856af1..52ed983ffa729 100644
--- a/python/paddle/base/data_feeder.py
+++ b/python/paddle/base/data_feeder.py
@@ -12,20 +12,21 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import core
-import numpy as np
-import warnings
 import struct
+import warnings
+
+import numpy as np
 
+from ..ir import OpResult
+from . import core
 from .framework import (
     Variable,
+    _cpu_num,
+    _cuda_ids,
     default_main_program,
     in_dygraph_mode,
     in_pir_mode,
 )
-from .framework import _cpu_num, _cuda_ids
-
-from ..ir import OpResult
 
 __all__ = ['DataFeeder']
 
diff --git a/python/paddle/base/dataset.py b/python/paddle/base/dataset.py
index 533fb69a6621b..961a392349707 100644
--- a/python/paddle/base/dataset.py
+++ b/python/paddle/base/dataset.py
@@ -13,10 +13,12 @@
 # limitations under the License.
 """This is definition of dataset class, which is high performance IO."""
 
-from paddle.base.proto import data_feed_pb2
 from google.protobuf import text_format
-from . import core
+
+from paddle.base.proto import data_feed_pb2
+
 from ..utils import deprecated
+from . import core
 
 __all__ = ['DatasetFactory', 'InMemoryDataset', 'QueueDataset']
 
diff --git a/python/paddle/base/default_scope_funcs.py b/python/paddle/base/default_scope_funcs.py
index 80cfe40db57ad..992714e6cd409 100644
--- a/python/paddle/base/default_scope_funcs.py
+++ b/python/paddle/base/default_scope_funcs.py
@@ -26,9 +26,10 @@
 invoked in a new local scope.
 """
 
-import paddle.base.core
 import threading
 
+import paddle.base.core
+
 __tl_scope__ = threading.local()
 
 __all__ = [
diff --git a/python/paddle/base/dygraph/base.py b/python/paddle/base/dygraph/base.py
index 7edb748026d84..d85fc8ca25bf7 100644
--- a/python/paddle/base/dygraph/base.py
+++ b/python/paddle/base/dygraph/base.py
@@ -11,20 +11,22 @@
 # 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.
-from ..wrapped_decorator import signature_safe_contextmanager, wrap_decorator
-import decorator
 import inspect
 import sys
+import warnings
+
+import decorator
 import numpy as np
-from paddle.base import core
-from paddle.base import framework
+
+import paddle
+from paddle.base import core, framework
 from paddle.base.framework import global_var
 from paddle.base.multiprocess_utils import CleanupFuncRegistrar
-from .tracer import Tracer
+
 from ..data_feeder import convert_dtype
-import warnings
 from ..framework import _get_paddle_place
-import paddle
+from ..wrapped_decorator import signature_safe_contextmanager, wrap_decorator
+from .tracer import Tracer
 
 __all__ = [
     'no_grad',
diff --git a/python/paddle/base/dygraph/math_op_patch.py b/python/paddle/base/dygraph/math_op_patch.py
index 9448d7d9de9dd..5972b545f93e2 100644
--- a/python/paddle/base/dygraph/math_op_patch.py
+++ b/python/paddle/base/dygraph/math_op_patch.py
@@ -12,15 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .. import core
-from ..framework import (
-    convert_np_dtype_to_dtype_,
-)
-from .. import framework
-
 import numpy as np
+
 from paddle import _C_ops, _legacy_C_ops
 
+from .. import core, framework
+from ..framework import convert_np_dtype_to_dtype_
+
 _supported_int_dtype_ = [
     core.VarDesc.VarType.UINT8,
     core.VarDesc.VarType.INT8,
diff --git a/python/paddle/base/dygraph/tensor_patch_methods.py b/python/paddle/base/dygraph/tensor_patch_methods.py
index 8026884c34fc8..4f1b138abaae4 100644
--- a/python/paddle/base/dygraph/tensor_patch_methods.py
+++ b/python/paddle/base/dygraph/tensor_patch_methods.py
@@ -13,33 +13,33 @@
 # limitations under the License.
 
 import inspect
-import numpy as np
-import warnings
 import sys
+import warnings
+
+import numpy as np
 
 import paddle
-from .. import framework
-from ..framework import convert_np_dtype_to_dtype_
-from .. import core
-from .. import unique_name
+import paddle.profiler as profiler
+import paddle.utils.deprecated as deprecated
+from paddle import _C_ops
+from paddle.base.data_feeder import (
+    _PADDLE_DTYPE_2_NUMPY_DTYPE,
+    convert_uint16_to_float,
+)
+from paddle.profiler.utils import in_profiler_mode
+
+from .. import core, framework, unique_name
 from ..framework import (
-    Variable,
+    EagerParamBase,
     Parameter,
+    Variable,
     _getitem_static,
-    _setitem_static,
     _setitem_impl_,
-    EagerParamBase,
+    _setitem_static,
+    convert_np_dtype_to_dtype_,
 )
 from .base import switch_to_static_graph
 from .math_op_patch import monkey_patch_math_tensor
-from paddle.base.data_feeder import (
-    convert_uint16_to_float,
-    _PADDLE_DTYPE_2_NUMPY_DTYPE,
-)
-import paddle.utils.deprecated as deprecated
-import paddle.profiler as profiler
-from paddle.profiler.utils import in_profiler_mode
-from paddle import _C_ops
 
 _grad_scalar = None
 
diff --git a/python/paddle/base/dygraph/tracer.py b/python/paddle/base/dygraph/tracer.py
index 35cbe88f91f87..4df9517073c66 100644
--- a/python/paddle/base/dygraph/tracer.py
+++ b/python/paddle/base/dygraph/tracer.py
@@ -13,9 +13,8 @@
 # limitations under the License.
 
 
-from paddle.base import core
-from paddle.base import framework
 from paddle import _C_ops, _legacy_C_ops
+from paddle.base import core, framework
 
 name_mapping = {
     "graph_send_recv": {
diff --git a/python/paddle/base/dygraph_utils.py b/python/paddle/base/dygraph_utils.py
index 655a5f4f8b773..926c4680017ce 100644
--- a/python/paddle/base/dygraph_utils.py
+++ b/python/paddle/base/dygraph_utils.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .framework import dygraph_only
 from paddle import _legacy_C_ops
 
+from .framework import dygraph_only
+
 
 @dygraph_only
 def _append_activation_in_dygraph(
diff --git a/python/paddle/base/executor.py b/python/paddle/base/executor.py
index e5fddd15329e3..0921d7b79d14b 100755
--- a/python/paddle/base/executor.py
+++ b/python/paddle/base/executor.py
@@ -12,36 +12,31 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import copy
 import logging
 import os
 import sys
 import warnings
-import numpy as np
+from functools import lru_cache
 
-from . import set_flags, get_flags
-from .framework import Program, default_main_program
+import numpy as np
 
 from ..ir import OpResult
-from .wrapped_decorator import signature_safe_contextmanager
+from . import compiler, core, framework, get_flags, set_flags, unique_name
 from .data_feeder import convert_dtype
-from .framework import Variable, Operator, in_pir_mode
-
 from .framework import (
-    convert_np_dtype_to_dtype_,
+    Operator,
+    Program,
+    Variable,
     _apply_pass,
+    convert_np_dtype_to_dtype_,
+    default_main_program,
+    in_pir_mode,
     paddle_type_to_proto_type,
 )
-
-from . import core
-from . import unique_name
-from . import compiler
-from .trainer_factory import TrainerFactory
-from .trainer_factory import FetchHandlerMonitor
-import copy
-from . import framework
 from .incubate.checkpoint import auto_checkpoint as acp
-
-from functools import lru_cache
+from .trainer_factory import FetchHandlerMonitor, TrainerFactory
+from .wrapped_decorator import signature_safe_contextmanager
 
 __all__ = ['Executor', 'global_scope', 'scope_guard']
 
@@ -614,8 +609,8 @@ def _to_str(var):
 
 
 def _prepare_fleet_executor():
-    from ..distributed.fleet.proto import fleet_executor_desc_pb2
     from ..distributed.backup_env import getenv_or_backup
+    from ..distributed.fleet.proto import fleet_executor_desc_pb2
 
     trainer_endpoints_str = getenv_or_backup("PADDLE_TRAINER_ENDPOINTS", "")
     trainer_endpoints = trainer_endpoints_str.split(',')
@@ -945,7 +940,7 @@ def _get_program_and_executor(self, cached_data):
             # print(f"Program after convert:\n {inner_program}", flush=True)
         else:
             build_strategy = None
-            from paddle.incubate.autograd import prim_enabled, prim2orig
+            from paddle.incubate.autograd import prim2orig, prim_enabled
 
             if prim_enabled() and program == default_main_program():
                 prim2orig()
diff --git a/python/paddle/base/incubate/checkpoint/auto_checkpoint.py b/python/paddle/base/incubate/checkpoint/auto_checkpoint.py
index 23239b692c975..e8f75f3a4ed55 100644
--- a/python/paddle/base/incubate/checkpoint/auto_checkpoint.py
+++ b/python/paddle/base/incubate/checkpoint/auto_checkpoint.py
@@ -12,16 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import sys
-import logging
 import json
+import logging
 import os
+import sys
 import time
 from threading import current_thread
 
-from paddle.base import unique_name, compiler
-from .checkpoint_saver import SerializableBase, CheckpointSaver, PaddleModel
-from paddle.base.framework import in_dygraph_mode, Program
+from paddle.base import compiler, unique_name
+from paddle.base.framework import Program, in_dygraph_mode
+
+from .checkpoint_saver import CheckpointSaver, PaddleModel, SerializableBase
 
 g_train_epoch_range = None
 g_checker = None
diff --git a/python/paddle/base/initializer.py b/python/paddle/base/initializer.py
index 3902281721eac..7443e63b13e52 100644
--- a/python/paddle/base/initializer.py
+++ b/python/paddle/base/initializer.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .data_feeder import check_type
 import paddle
 
+from .data_feeder import check_type
+
 __all__ = ['set_global_initializer']
 
 _global_weight_initializer_ = None
diff --git a/python/paddle/base/io.py b/python/paddle/base/io.py
index 89468f88648e8..a2c7d02ede349 100644
--- a/python/paddle/base/io.py
+++ b/python/paddle/base/io.py
@@ -15,6 +15,7 @@
 import logging
 
 from paddle.base.log_helper import get_logger
+
 from . import reader
 from .reader import *
 
diff --git a/python/paddle/base/layer_helper.py b/python/paddle/base/layer_helper.py
index e6be93e777b75..312eaf67a3320 100644
--- a/python/paddle/base/layer_helper.py
+++ b/python/paddle/base/layer_helper.py
@@ -13,18 +13,19 @@
 # limitations under the License.
 
 import copy
+
 import paddle
+
+from . import unique_name
+from .dygraph_utils import _append_activation_in_dygraph
 from .framework import (
     Parameter,
+    _global_flags,
     dtype_is_floating,
     in_dygraph_mode,
-    _global_flags,
 )
-from . import unique_name
-from .param_attr import ParamAttr
-
 from .layer_helper_base import LayerHelperBase
-from .dygraph_utils import _append_activation_in_dygraph
+from .param_attr import ParamAttr
 
 
 class LayerHelper(LayerHelperBase):
diff --git a/python/paddle/base/layer_helper_base.py b/python/paddle/base/layer_helper_base.py
index b7bc6c6b8585e..6c047c08766fe 100644
--- a/python/paddle/base/layer_helper_base.py
+++ b/python/paddle/base/layer_helper_base.py
@@ -13,21 +13,22 @@
 # limitations under the License.
 
 import copy
+
 import numpy as np
+
 import paddle
 
+from . import core, unique_name
 from .framework import (
     Variable,
+    _current_expected_place,
     default_main_program,
     default_startup_program,
     in_dygraph_mode,
     in_pir_mode,
-    _current_expected_place,
 )
-from . import unique_name
+from .initializer import _global_bias_initializer, _global_weight_initializer
 from .param_attr import ParamAttr, WeightNormParamAttr
-from . import core
-from .initializer import _global_weight_initializer, _global_bias_initializer
 
 __all__ = ['LayerHelperBase']
 
diff --git a/python/paddle/base/layers/io.py b/python/paddle/base/layers/io.py
index d4aa7734aee6f..51f5b10fe0618 100644
--- a/python/paddle/base/layers/io.py
+++ b/python/paddle/base/layers/io.py
@@ -14,13 +14,9 @@
 
 from .. import core
 from ..executor import global_scope
-from ..framework import (
-    default_main_program,
-    default_startup_program,
-)
+from ..framework import default_main_program, default_startup_program
 from ..unique_name import generate as unique_name
 
-
 __all__ = []
 
 
diff --git a/python/paddle/base/layers/layer_function_generator.py b/python/paddle/base/layers/layer_function_generator.py
index 1b1b85d00ea42..bd11a412ffc5b 100644
--- a/python/paddle/base/layers/layer_function_generator.py
+++ b/python/paddle/base/layers/layer_function_generator.py
@@ -13,21 +13,22 @@
 # limitations under the License.
 
 import re
-import warnings
 import string
-
+import warnings
 from io import StringIO
-from ..proto import framework_pb2
+
+from paddle import _C_ops, _legacy_C_ops
+
+from ..data_feeder import check_variable_and_dtype
 from ..framework import (
     OpProtoHolder,
     Variable,
-    core,
     convert_np_dtype_to_dtype_,
+    core,
     in_dygraph_mode,
 )
 from ..layer_helper import LayerHelper
-from ..data_feeder import check_variable_and_dtype
-from paddle import _C_ops, _legacy_C_ops
+from ..proto import framework_pb2
 
 __all__ = [
     'generate_layer_fn',
diff --git a/python/paddle/base/layers/math_op_patch.py b/python/paddle/base/layers/math_op_patch.py
index 06f384eae23d1..53f35939b1f3a 100644
--- a/python/paddle/base/layers/math_op_patch.py
+++ b/python/paddle/base/layers/math_op_patch.py
@@ -12,13 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import warnings
 import inspect
+import warnings
+
+from paddle.base.dygraph.base import in_to_static_mode
 
 from .. import core
-from ..framework import Variable, unique_name, static_only
+from ..framework import Variable, static_only, unique_name
 from .layer_function_generator import OpProtoHolder
-from paddle.base.dygraph.base import in_to_static_mode
 
 _supported_int_dtype_ = [
     core.VarDesc.VarType.BOOL,
@@ -354,9 +355,7 @@ def pop(self, *args):
         Returns:
             Variable: self[index]
         """
-        from paddle.jit.dy2static.convert_operators import (
-            _run_paddle_pop,
-        )
+        from paddle.jit.dy2static.convert_operators import _run_paddle_pop
 
         if self.type != core.VarDesc.VarType.LOD_TENSOR_ARRAY:
             raise TypeError(
diff --git a/python/paddle/base/lod_tensor.py b/python/paddle/base/lod_tensor.py
index 96e18ec8f3bde..4be41d5cc6adc 100644
--- a/python/paddle/base/lod_tensor.py
+++ b/python/paddle/base/lod_tensor.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import numpy as np
+
 from . import core
 from .data_feeder import DataToLoDTensorConverter
-import numpy as np
 
 __all__ = ['create_lod_tensor', 'create_random_int_lodtensor']
 
diff --git a/python/paddle/base/multiprocess_utils.py b/python/paddle/base/multiprocess_utils.py
index b763446930fdb..8d18db0bb3ea8 100644
--- a/python/paddle/base/multiprocess_utils.py
+++ b/python/paddle/base/multiprocess_utils.py
@@ -12,14 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import sys
-import signal
 import atexit
+import queue
+import signal
+import sys
 
 from . import core
 
-import queue
-
 # multi-process worker check indices queue interval, avoid
 # hanging in subprocess data loading
 MP_STATUS_CHECK_INTERVAL = 5.0
diff --git a/python/paddle/base/param_attr.py b/python/paddle/base/param_attr.py
index a17432fcc3df2..674c4ad4328c5 100644
--- a/python/paddle/base/param_attr.py
+++ b/python/paddle/base/param_attr.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 
 import paddle
-from paddle.regularizer import WeightDecayRegularizer
 from paddle.base.data_feeder import check_type
+from paddle.regularizer import WeightDecayRegularizer
 
 __all__ = [
     'ParamAttr',
diff --git a/python/paddle/base/reader.py b/python/paddle/base/reader.py
index 63b97ee2bd495..c3a65721db275 100644
--- a/python/paddle/base/reader.py
+++ b/python/paddle/base/reader.py
@@ -12,44 +12,44 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import core
+import logging
+import multiprocessing
+import queue
 import sys
-import numpy as np
 import threading
+import warnings
+
+import numpy as np
+
 import paddle
+from paddle.base.framework import _set_expected_place
 
+from . import core
+from .data_feeder import BatchedTensorProvider, DataFeeder
+from .executor import global_scope
 from .framework import (
     Program,
-    program_guard,
+    _current_expected_place,
+    _get_paddle_place,
+    _get_paddle_place_list,
     default_main_program,
     default_startup_program,
     in_dygraph_mode,
-    _current_expected_place,
+    program_guard,
 )
-from .executor import global_scope
-from .data_feeder import DataFeeder, BatchedTensorProvider
+from .layers.io import (
+    __create_unshared_decorated_reader__,
+    _copy_reader_var_,
+    monkey_patch_reader_methods,
+)
+from .multiprocess_utils import _cleanup  # noqa: F401
+from .multiprocess_utils import multiprocess_queue_set  # noqa: F401
 from .multiprocess_utils import (
-    multiprocess_queue_set,  # noqa: F401
     CleanupFuncRegistrar,
     _cleanup_mmap,
-    _cleanup,  # noqa: F401
     _set_SIGCHLD_handler,
 )
-from .layers.io import (
-    monkey_patch_reader_methods,
-    _copy_reader_var_,
-    __create_unshared_decorated_reader__,
-)
 from .unique_name import UniqueNameGenerator
-from .framework import _get_paddle_place, _get_paddle_place_list
-from paddle.base.framework import _set_expected_place
-import logging
-import warnings
-
-### Dygraph DataLoader configs ###
-import multiprocessing
-
-import queue
 
 # NOTE: [ avoid hanging & failed quickly ] These value is used in getting data from another process
 QUEUE_GET_TIMEOUT = 60
diff --git a/python/paddle/base/trainer_desc.py b/python/paddle/base/trainer_desc.py
index 48cc427ac8e7e..f64530ec02353 100644
--- a/python/paddle/base/trainer_desc.py
+++ b/python/paddle/base/trainer_desc.py
@@ -13,8 +13,8 @@
 # limitations under the License.
 """Definition of trainers."""
 
-import sys
 import os
+import sys
 
 __all__ = [
     'TrainerDesc',
diff --git a/python/paddle/base/trainer_factory.py b/python/paddle/base/trainer_factory.py
index cf197fab524e0..75351872d73d6 100644
--- a/python/paddle/base/trainer_factory.py
+++ b/python/paddle/base/trainer_factory.py
@@ -13,33 +13,35 @@
 # limitations under the License.
 """Definition of TrainerFactory."""
 
+import logging
 import threading
 import time
-import logging
+
 import numpy as np
+
 from paddle.base.log_helper import get_logger
 
 local_logger = get_logger(
     __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s'
 )
 
-from .trainer_desc import (  # noqa: F401
-    MultiTrainer,
-    DistMultiTrainer,
-    PipelineTrainer,
-    HeterXpuTrainer,
-    PSGPUTrainer,
-    HeterPipelineTrainer,
-)
 from .device_worker import (  # noqa: F401
-    Hogwild,
-    DownpourSGD,
     DownpourLite,
-    Section,
+    DownpourSGD,
     DownpourSGDOPT,
     HeterSection,
+    Hogwild,
+    Section,
 )
 from .framework import Variable
+from .trainer_desc import (  # noqa: F401
+    DistMultiTrainer,
+    HeterPipelineTrainer,
+    HeterXpuTrainer,
+    MultiTrainer,
+    PipelineTrainer,
+    PSGPUTrainer,
+)
 
 __all__ = ["TrainerFactory", "FetchHandlerMonitor"]
 
diff --git a/python/paddle/base/unique_name.py b/python/paddle/base/unique_name.py
index 745675767f150..c240273da890d 100644
--- a/python/paddle/base/unique_name.py
+++ b/python/paddle/base/unique_name.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 
 import collections
+
 from .wrapped_decorator import signature_safe_contextmanager
 
 __all__ = ['generate', 'switch', 'guard']
@@ -121,7 +122,7 @@ def generate(key):
 # NOTE(zhiqiu): use c++ unique_name_generator in dygraph mode,
 # in order to keep name consistency.
 def generate_with_ignorable_key(key):
-    from .framework import in_dygraph_mode, _dygraph_tracer
+    from .framework import _dygraph_tracer, in_dygraph_mode
 
     if in_dygraph_mode():
         return _dygraph_tracer()._generate_unique_name()
diff --git a/python/paddle/base/variable_index.py b/python/paddle/base/variable_index.py
index 1b3039c5a8cbe..dcc87b74ea658 100644
--- a/python/paddle/base/variable_index.py
+++ b/python/paddle/base/variable_index.py
@@ -12,13 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import itertools
+import warnings
+
 import numpy as np
-from . import unique_name
-from . import core
+
 import paddle
-import warnings
-import itertools
 
+from . import core, unique_name
 
 MAX_INTEGER = 2**31 - 1
 
@@ -370,9 +371,7 @@ def _setitem_for_tensor_array(var, item, value):
         not paddle.in_dynamic_mode()
     ), "setitem for tensor_array must be called in static graph mode."
     if isinstance(item, (Variable, int)):
-        from paddle.jit.dy2static.variable_trans_func import (
-            to_static_variable,
-        )
+        from paddle.jit.dy2static.variable_trans_func import to_static_variable
         from paddle.tensor import array_write
 
         item = paddle.cast(to_static_variable(item), dtype='int64')
@@ -388,7 +387,8 @@ def _setitem_for_tensor_array(var, item, value):
 
 def _setitem_impl_(var, item, value):
     from paddle.base import core
-    from .framework import default_main_program, Variable
+
+    from .framework import Variable, default_main_program
 
     if var.type == core.VarDesc.VarType.LOD_TENSOR_ARRAY:
         return _setitem_for_tensor_array(var, item, value)
@@ -572,9 +572,7 @@ def _setitem_impl_(var, item, value):
 
     if not paddle.in_dynamic_mode():
         # map var to the new output
-        from paddle.jit.dy2static.program_translator import (
-            ProgramTranslator,
-        )
+        from paddle.jit.dy2static.program_translator import ProgramTranslator
 
         ProgramTranslator.get_instance()._inplace_map.add(
             cur_block.program, var.desc.id(), output
@@ -601,8 +599,8 @@ def set_value_for_bool_tensor(var, item, value):
             )
 
     def idx_not_empty(var, item, value):
-        from .framework import Variable
         from ..tensor import gather_nd, scatter_nd_add
+        from .framework import Variable
 
         if not isinstance(value, Variable):
             value = paddle.assign(value).cast(var.dtype)
@@ -826,7 +824,7 @@ def _setitem_static(x, indices, values):
         indices(int|slice|None|Tensor|List|Tuple...): Indices, used to indicate the position of the element to be fetched.
         values(Tensor|Number|Ndarray): values to be assigned to the x.
     """
-    from .framework import default_main_program, Variable
+    from .framework import Variable, default_main_program
 
     if x.type == paddle.base.core.VarDesc.VarType.LOD_TENSOR_ARRAY:
         return _setitem_for_tensor_array(x, indices, values)
diff --git a/python/paddle/base/wrapped_decorator.py b/python/paddle/base/wrapped_decorator.py
index 7e7dbff65611e..1567bb0d4c55c 100644
--- a/python/paddle/base/wrapped_decorator.py
+++ b/python/paddle/base/wrapped_decorator.py
@@ -12,9 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import decorator
 import contextlib
 
+import decorator
+
 __all__ = ['wrap_decorator', 'signature_safe_contextmanager']