old_contents: # Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # 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 six.moves import reduce
  from paddle.fluid.layer_helper import LayerHelper
  from paddle.fluid.param_attr import ParamAttr
  from paddle.fluid.framework import convert_np_dtype_to_dtype_, _non_static_mode, _varbase_creator
  from paddle.fluid.framework import device_guard, default_main_program, dygraph_only, _dygraph_tracer
  from paddle.fluid.framework import OpProtoHolder, Variable
  from paddle.fluid.initializer import Constant
  from paddle.fluid.core import VarDesc
  from paddle.fluid import core, dygraph_utils
  from paddle.fluid.data_feeder import check_type, check_dtype, check_variable_and_dtype, convert_dtype
  from paddle.fluid.layers import fill_constant, utils, scale
  from paddle.tensor.layer_function_generator import templatedoc
  import paddle.fluid as fluid
  import numpy
  import warnings
  
new_contents: # Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # 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 six.moves import reduce
  from paddle.fluid.layer_helper import LayerHelper
  from paddle.fluid.param_attr import ParamAttr
  from paddle.fluid.framework import convert_np_dtype_to_dtype_, _non_static_mode, _varbase_creator, in_dygraph_mode, _in_legacy_dygraph
  from paddle.fluid.framework import device_guard, default_main_program, dygraph_only, _dygraph_tracer
  from paddle.fluid.framework import OpProtoHolder, Variable
  from paddle.fluid.initializer import Constant
  from paddle.fluid.core import VarDesc
  from paddle.fluid import core, dygraph_utils
  from paddle.fluid.data_feeder import check_type, check_dtype, check_variable_and_dtype, convert_dtype
  from paddle.fluid.layers import fill_constant, utils, scale
  from paddle.tensor.layer_function_generator import templatedoc
  import paddle.fluid as fluid
  import numpy
  import warnings
  
subject: add more interface for user in common_ops_import (#44270)