From a20f76484faa8c4b7c98f6692047b8be4180ec22 Mon Sep 17 00:00:00 2001
From: Nyakku Shigure <sigure.qaq@gmail.com>
Date: Tue, 11 Oct 2022 16:43:41 +0800
Subject: [PATCH] [CodeStyle][F401] remove unused import in
 unittests/test_[p-t] (#46705)

---
 .../tests/unittests/test_paddle_imperative_double_grad.py    | 1 -
 .../fluid/tests/unittests/test_paddle_multiprocessing.py     | 3 +--
 .../fluid/tests/unittests/test_paddle_save_load_binary.py    | 5 -----
 .../tests/unittests/test_parallel_dygraph_dataparallel.py    | 2 --
 .../unittests/test_parallel_dygraph_dataparallel_cpuonly.py  | 2 --
 ...est_parallel_dygraph_sparse_embedding_diff_length_gloo.py | 5 -----
 .../unittests/test_parallel_dygraph_sparse_embedding_gloo.py | 5 -----
 ...est_parallel_dygraph_sparse_embedding_over_height_gloo.py | 4 ----
 .../unittests/test_parallel_dygraph_transformer_gloo.py      | 3 ---
 .../unittests/test_parallel_dygraph_unused_variables_gloo.py | 4 ----
 .../fluid/tests/unittests/test_parallel_executor_crf.py      | 1 -
 .../fluid/tests/unittests/test_parallel_executor_profiler.py | 1 -
 .../tests/unittests/test_parallel_executor_transformer.py    | 1 -
 .../test_parallel_executor_transformer_auto_growth.py        | 1 -
 .../test_parallel_ssa_graph_inference_feed_partial_data.py   | 2 --
 .../unittests/test_partial_eager_deletion_transformer.py     | 2 --
 python/paddle/fluid/tests/unittests/test_partial_sum_op.py   | 4 ----
 .../paddle/fluid/tests/unittests/test_pipeline_parallel.py   | 1 -
 python/paddle/fluid/tests/unittests/test_poisson_op.py       | 1 -
 python/paddle/fluid/tests/unittests/test_pool1d_api.py       | 2 --
 python/paddle/fluid/tests/unittests/test_pool2d_api.py       | 3 +--
 python/paddle/fluid/tests/unittests/test_pool3d_api.py       | 3 +--
 python/paddle/fluid/tests/unittests/test_pow.py              | 1 -
 python/paddle/fluid/tests/unittests/test_prelu_op.py         | 3 +--
 python/paddle/fluid/tests/unittests/test_print_op.py         | 1 -
 python/paddle/fluid/tests/unittests/test_prior_box_op.py     | 1 -
 python/paddle/fluid/tests/unittests/test_profiler.py         | 1 -
 .../paddle/fluid/tests/unittests/test_profiler_statistic.py  | 1 -
 python/paddle/fluid/tests/unittests/test_program.py          | 2 +-
 python/paddle/fluid/tests/unittests/test_prroi_pool_op.py    | 3 +--
 .../fluid/tests/unittests/test_pull_gpups_sparse_op.py       | 2 --
 .../paddle/fluid/tests/unittests/test_put_along_axis_op.py   | 2 --
 .../fluid/tests/unittests/test_py_reader_pin_memory.py       | 1 -
 python/paddle/fluid/tests/unittests/test_qr_op.py            | 1 -
 python/paddle/fluid/tests/unittests/test_queue.py            | 1 -
 python/paddle/fluid/tests/unittests/test_rad2deg.py          | 2 --
 python/paddle/fluid/tests/unittests/test_rand_op.py          | 3 +--
 python/paddle/fluid/tests/unittests/test_randint_op.py       | 1 -
 python/paddle/fluid/tests/unittests/test_random_crop_op.py   | 1 -
 .../paddle/fluid/tests/unittests/test_random_routing_op.py   | 5 -----
 python/paddle/fluid/tests/unittests/test_random_seed.py      | 1 -
 python/paddle/fluid/tests/unittests/test_randperm_op.py      | 1 -
 .../paddle/fluid/tests/unittests/test_rank_attention_op.py   | 4 +---
 .../fluid/tests/unittests/test_raw_program_optimizer.py      | 1 -
 python/paddle/fluid/tests/unittests/test_reduce_op.py        | 2 +-
 python/paddle/fluid/tests/unittests/test_reducescatter.py    | 1 -
 .../paddle/fluid/tests/unittests/test_reducescatter_api.py   | 1 -
 python/paddle/fluid/tests/unittests/test_regularizer.py      | 1 -
 python/paddle/fluid/tests/unittests/test_regularizer_api.py  | 4 ----
 python/paddle/fluid/tests/unittests/test_renorm_op.py        | 1 -
 .../fluid/tests/unittests/test_repeat_interleave_op.py       | 1 -
 .../fluid/tests/unittests/test_reset_grad_inplace_version.py | 4 +---
 python/paddle/fluid/tests/unittests/test_reshape_op.py       | 2 --
 .../fluid/tests/unittests/test_retinanet_detection_output.py | 2 --
 python/paddle/fluid/tests/unittests/test_rnn_decode_api.py   | 1 -
 .../fluid/tests/unittests/test_rnn_memory_helper_op.py       | 1 -
 python/paddle/fluid/tests/unittests/test_rnn_op.py           | 5 +----
 python/paddle/fluid/tests/unittests/test_roi_align_op.py     | 1 -
 .../tests/unittests/test_roi_perspective_transform_op.py     | 3 ---
 python/paddle/fluid/tests/unittests/test_roll_op.py          | 1 -
 python/paddle/fluid/tests/unittests/test_rot90_op.py         | 2 --
 .../fluid/tests/unittests/test_rpn_target_assign_op.py       | 1 -
 python/paddle/fluid/tests/unittests/test_run.py              | 2 --
 python/paddle/fluid/tests/unittests/test_run_program_op.py   | 4 ++--
 .../unittests/test_runtime_and_compiletime_exception.py      | 2 --
 python/paddle/fluid/tests/unittests/test_sampling_id_op.py   | 3 ---
 .../unittests/test_save_inference_model_conditional_op.py    | 2 --
 .../fluid/tests/unittests/test_save_model_without_var.py     | 4 ----
 .../paddle/fluid/tests/unittests/test_saved_tensors_hooks.py | 1 -
 python/paddle/fluid/tests/unittests/test_scope.py            | 1 -
 python/paddle/fluid/tests/unittests/test_searchsorted_op.py  | 1 -
 python/paddle/fluid/tests/unittests/test_segment_ops.py      | 1 -
 python/paddle/fluid/tests/unittests/test_selu_op.py          | 3 ---
 python/paddle/fluid/tests/unittests/test_set_value_op.py     | 2 +-
 python/paddle/fluid/tests/unittests/test_shard_index_op.py   | 5 -----
 .../paddle/fluid/tests/unittests/test_shrink_rnn_memory.py   | 2 +-
 python/paddle/fluid/tests/unittests/test_shuffle_batch_op.py | 3 ---
 .../paddle/fluid/tests/unittests/test_shuffle_channel_op.py  | 3 ---
 .../unittests/test_sigmoid_cross_entropy_with_logits_op.py   | 3 +--
 .../paddle/fluid/tests/unittests/test_sigmoid_focal_loss.py  | 2 --
 .../paddle/fluid/tests/unittests/test_similarity_focus_op.py | 1 -
 python/paddle/fluid/tests/unittests/test_simple_rnn_op.py    | 3 ---
 python/paddle/fluid/tests/unittests/test_slice_var.py        | 2 --
 python/paddle/fluid/tests/unittests/test_softmax2d.py        | 1 -
 python/paddle/fluid/tests/unittests/test_softmax_op.py       | 2 --
 python/paddle/fluid/tests/unittests/test_solve_op.py         | 4 ----
 python/paddle/fluid/tests/unittests/test_sort_op.py          | 2 --
 python/paddle/fluid/tests/unittests/test_sparse_addmm_op.py  | 2 --
 .../paddle/fluid/tests/unittests/test_sparse_attention_op.py | 2 --
 python/paddle/fluid/tests/unittests/test_sparse_conv_op.py   | 1 -
 python/paddle/fluid/tests/unittests/test_sparse_copy_op.py   | 2 --
 python/paddle/fluid/tests/unittests/test_sparse_matmul_op.py | 1 -
 .../paddle/fluid/tests/unittests/test_sparse_momentum_op.py  | 4 ----
 python/paddle/fluid/tests/unittests/test_sparse_mv_op.py     | 2 --
 .../paddle/fluid/tests/unittests/test_sparse_pooling_op.py   | 2 --
 .../paddle/fluid/tests/unittests/test_sparse_softmax_op.py   | 4 ----
 python/paddle/fluid/tests/unittests/test_sparse_utils_op.py  | 1 -
 .../tests/unittests/test_spawn_and_init_parallel_env.py      | 1 -
 python/paddle/fluid/tests/unittests/test_spectral_norm_op.py | 1 -
 python/paddle/fluid/tests/unittests/test_split_op.py         | 2 +-
 python/paddle/fluid/tests/unittests/test_split_program.py    | 1 -
 python/paddle/fluid/tests/unittests/test_splits_api.py       | 1 -
 .../paddle/fluid/tests/unittests/test_square_error_cost.py   | 1 -
 python/paddle/fluid/tests/unittests/test_squeeze_op.py       | 2 +-
 python/paddle/fluid/tests/unittests/test_stack_op.py         | 1 -
 python/paddle/fluid/tests/unittests/test_static_save_load.py | 4 ----
 .../fluid/tests/unittests/test_static_save_load_large.py     | 1 -
 python/paddle/fluid/tests/unittests/test_sum_op.py           | 1 -
 python/paddle/fluid/tests/unittests/test_svd_op.py           | 3 ---
 .../paddle/fluid/tests/unittests/test_take_along_axis_op.py  | 2 --
 python/paddle/fluid/tests/unittests/test_tdm_child_op.py     | 5 -----
 python/paddle/fluid/tests/unittests/test_tdm_sampler_op.py   | 5 -----
 .../tests/unittests/test_teacher_student_sigmoid_loss_op.py  | 1 -
 .../fluid/tests/unittests/test_tensor_array_to_tensor.py     | 2 --
 .../fluid/tests/unittests/test_tensor_fill_diagonal_.py      | 1 -
 .../tests/unittests/test_tensor_fill_diagonal_tensor.py      | 1 -
 .../tests/unittests/test_tensor_fill_diagonal_tensor_.py     | 1 -
 .../fluid/tests/unittests/test_tensor_type_promotion.py      | 1 -
 python/paddle/fluid/tests/unittests/test_tensordot.py        | 1 -
 python/paddle/fluid/tests/unittests/test_tf32_cublas.py      | 1 -
 python/paddle/fluid/tests/unittests/test_tf32_cudnn.py       | 4 ----
 python/paddle/fluid/tests/unittests/test_tile_op.py          | 2 +-
 python/paddle/fluid/tests/unittests/test_top_k_op.py         | 1 -
 python/paddle/fluid/tests/unittests/test_top_k_v2_op.py      | 1 -
 python/paddle/fluid/tests/unittests/test_trace_op.py         | 1 -
 python/paddle/fluid/tests/unittests/test_trainer_desc.py     | 3 ---
 .../paddle/fluid/tests/unittests/test_transfer_dtype_op.py   | 1 -
 python/paddle/fluid/tests/unittests/test_tril_indices_op.py  | 1 -
 python/paddle/fluid/tests/unittests/test_triu_indices_op.py  | 1 -
 python/paddle/fluid/tests/unittests/test_trunc_op.py         | 3 ---
 .../tests/unittests/test_truncated_gaussian_random_op.py     | 2 --
 131 files changed, 19 insertions(+), 250 deletions(-)

diff --git a/python/paddle/fluid/tests/unittests/test_paddle_imperative_double_grad.py b/python/paddle/fluid/tests/unittests/test_paddle_imperative_double_grad.py
index 967e3c5f2e..99b797fbf9 100644
--- a/python/paddle/fluid/tests/unittests/test_paddle_imperative_double_grad.py
+++ b/python/paddle/fluid/tests/unittests/test_paddle_imperative_double_grad.py
@@ -19,7 +19,6 @@ from unittest import TestCase
 import numpy as np
 import paddle
 from paddle.fluid.framework import _test_eager_guard, _in_legacy_dygraph
-import paddle.fluid.core as core
 
 
 def _dygraph_guard_(func):
diff --git a/python/paddle/fluid/tests/unittests/test_paddle_multiprocessing.py b/python/paddle/fluid/tests/unittests/test_paddle_multiprocessing.py
index f13e20f4e9..8f4131c8d6 100644
--- a/python/paddle/fluid/tests/unittests/test_paddle_multiprocessing.py
+++ b/python/paddle/fluid/tests/unittests/test_paddle_multiprocessing.py
@@ -14,12 +14,11 @@
 
 import os
 import gc
-import sys
 import unittest
 import time
 import paddle
 import paddle.incubate.multiprocessing as mp
-from paddle.fluid.framework import _test_eager_guard, _in_legacy_dygraph, in_dygraph_mode, _enable_legacy_dygraph
+from paddle.fluid.framework import _enable_legacy_dygraph, _test_eager_guard, in_dygraph_mode
 
 REPEAT = 20
 HAS_SHM_FILES = os.path.isdir('/dev/shm')
diff --git a/python/paddle/fluid/tests/unittests/test_paddle_save_load_binary.py b/python/paddle/fluid/tests/unittests/test_paddle_save_load_binary.py
index 8ef06e7309..32ee64d3c7 100644
--- a/python/paddle/fluid/tests/unittests/test_paddle_save_load_binary.py
+++ b/python/paddle/fluid/tests/unittests/test_paddle_save_load_binary.py
@@ -16,16 +16,11 @@ import unittest
 import numpy as np
 from io import BytesIO
 import os
-import sys
-import six
 import platform
 import tempfile
 
 import paddle
-import paddle.nn as nn
-import paddle.optimizer as opt
 import paddle.fluid as fluid
-from paddle.fluid.optimizer import Adam
 import paddle.fluid.framework as framework
 from test_imperative_base import new_program_scope
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel.py
index c3eee9a4a2..fb69986a34 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel.py
@@ -14,14 +14,12 @@
 
 import unittest
 import time
-import paddle
 import paddle.fluid as fluid
 import copy
 import os
 import subprocess
 
 from paddle.distributed.utils.launch_utils import find_free_ports, watch_local_trainers, get_cluster, TrainerProc
-from paddle.fluid.framework import _test_eager_guard
 
 
 def get_cluster_from_args(selected_gpus):
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel_cpuonly.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel_cpuonly.py
index 62b224f220..8862a3310a 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel_cpuonly.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_dataparallel_cpuonly.py
@@ -14,8 +14,6 @@
 
 import unittest
 import time
-import paddle
-import paddle.fluid as fluid
 import copy
 import os
 import subprocess
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_diff_length_gloo.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_diff_length_gloo.py
index 1bcd8c76c1..278ea58de3 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_diff_length_gloo.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_diff_length_gloo.py
@@ -13,14 +13,9 @@
 # limitations under the License.
 
 import os
-import sys
 import unittest
 
-import paddle.fluid as fluid
 from test_dist_base import TestDistBase
-from spawn_runner_base import TestDistSpawnRunner
-from parallel_dygraph_sparse_embedding import TestSparseEmbedding
-from parallel_dygraph_sparse_embedding_fp64 import TestSparseEmbeddingFP64
 
 flag_name = os.path.splitext(__file__)[0]
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_gloo.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_gloo.py
index c8b093cfce..c9e4d66917 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_gloo.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_gloo.py
@@ -13,14 +13,9 @@
 # limitations under the License.
 
 import os
-import sys
 import unittest
 
-import paddle.fluid as fluid
 from test_dist_base import TestDistBase
-from spawn_runner_base import TestDistSpawnRunner
-from parallel_dygraph_sparse_embedding import TestSparseEmbedding
-from parallel_dygraph_sparse_embedding_fp64 import TestSparseEmbeddingFP64
 
 flag_name = os.path.splitext(__file__)[0]
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_over_height_gloo.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_over_height_gloo.py
index 01ff34bba7..76f2d3ecaa 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_over_height_gloo.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_sparse_embedding_over_height_gloo.py
@@ -13,13 +13,9 @@
 # limitations under the License.
 
 import os
-import sys
 import unittest
 
-import paddle.fluid as fluid
 from test_dist_base import TestDistBase
-from spawn_runner_base import TestDistSpawnRunner
-from parallel_dygraph_sparse_embedding_over_height import TestSparseEmbeddingOverHeight
 
 flag_name = os.path.splitext(__file__)[0]
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_transformer_gloo.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_transformer_gloo.py
index c820b00e47..6089ef5d82 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_transformer_gloo.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_transformer_gloo.py
@@ -13,13 +13,10 @@
 # limitations under the License.
 
 import os
-import sys
 import unittest
 
 import paddle.fluid as fluid
 from test_dist_base import TestDistBase
-from spawn_runner_base import TestDistSpawnRunner
-from parallel_dygraph_transformer import TestTransformer
 
 flag_name = os.path.splitext(__file__)[0]
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_unused_variables_gloo.py b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_unused_variables_gloo.py
index 701a8db50b..0cadd9a61b 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_dygraph_unused_variables_gloo.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_dygraph_unused_variables_gloo.py
@@ -13,13 +13,9 @@
 # limitations under the License.
 
 import os
-import sys
 import unittest
 
-import paddle.fluid as fluid
 from test_dist_base import TestDistBase
-from spawn_runner_base import TestDistSpawnRunner
-from parallel_dygraph_unused_variables import TestSparseEmbeddingUnusedVars
 
 flag_name = os.path.splitext(__file__)[0]
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_executor_crf.py b/python/paddle/fluid/tests/unittests/test_parallel_executor_crf.py
index a107a9bc08..7ef548536a 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_executor_crf.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_executor_crf.py
@@ -18,7 +18,6 @@ from paddle.fluid import compiler
 import paddle.fluid.core as core
 import unittest
 import paddle
-import numpy as np
 import os
 
 word_dict, verb_dict, label_dict = conll05.get_dict()
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_executor_profiler.py b/python/paddle/fluid/tests/unittests/test_parallel_executor_profiler.py
index 124eb01f0c..6ba451b0e6 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_executor_profiler.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_executor_profiler.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import numpy as np
 import paddle.fluid as fluid
 import paddle.fluid.core as core
 from paddle.fluid.tests.unittests.test_profiler import TestProfiler
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer.py b/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer.py
index 23bad59c34..684be9023b 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import paddle.fluid as fluid
 import transformer_model
 import numpy as np
 from parallel_executor_test_base import TestParallelExecutorBase, DeviceType
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer_auto_growth.py b/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer_auto_growth.py
index e7afa27b7b..7f38de13af 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer_auto_growth.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_executor_transformer_auto_growth.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-from test_parallel_executor_transformer import *
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_ssa_graph_inference_feed_partial_data.py b/python/paddle/fluid/tests/unittests/test_parallel_ssa_graph_inference_feed_partial_data.py
index 8110c0a03c..cf6862a476 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_ssa_graph_inference_feed_partial_data.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_ssa_graph_inference_feed_partial_data.py
@@ -17,7 +17,5 @@ import unittest
 
 fluid.core.globals()['FLAGS_enable_parallel_graph'] = 1
 
-from test_parallel_executor_inference_feed_partial_data import *
-
 if __name__ == '__main__':
     unittest.main()
diff --git a/python/paddle/fluid/tests/unittests/test_partial_eager_deletion_transformer.py b/python/paddle/fluid/tests/unittests/test_partial_eager_deletion_transformer.py
index 15d9e0e2da..eb9cae94b7 100644
--- a/python/paddle/fluid/tests/unittests/test_partial_eager_deletion_transformer.py
+++ b/python/paddle/fluid/tests/unittests/test_partial_eager_deletion_transformer.py
@@ -18,8 +18,6 @@ import paddle
 
 fluid.core._set_eager_deletion_mode(0.0, 0.55, True)
 
-from test_parallel_executor_transformer import TestTransformer
-
 if __name__ == '__main__':
     paddle.enable_static()
     unittest.main()
diff --git a/python/paddle/fluid/tests/unittests/test_partial_sum_op.py b/python/paddle/fluid/tests/unittests/test_partial_sum_op.py
index 7292a9bce4..f6ae90b086 100644
--- a/python/paddle/fluid/tests/unittests/test_partial_sum_op.py
+++ b/python/paddle/fluid/tests/unittests/test_partial_sum_op.py
@@ -15,10 +15,6 @@
 import unittest
 import numpy as np
 from op_test import OpTest
-import paddle.fluid.core as core
-from paddle.fluid.op import Operator
-import paddle.fluid.layers as layers
-import paddle.fluid as fluid
 import random
 import six
 
diff --git a/python/paddle/fluid/tests/unittests/test_pipeline_parallel.py b/python/paddle/fluid/tests/unittests/test_pipeline_parallel.py
index 25e96ad231..e1abb2c237 100644
--- a/python/paddle/fluid/tests/unittests/test_pipeline_parallel.py
+++ b/python/paddle/fluid/tests/unittests/test_pipeline_parallel.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import paddle.fluid as fluid
 
 from test_parallel_dygraph_dataparallel import TestMultipleGpus
 
diff --git a/python/paddle/fluid/tests/unittests/test_poisson_op.py b/python/paddle/fluid/tests/unittests/test_poisson_op.py
index 26fb1e1634..d6f878c947 100644
--- a/python/paddle/fluid/tests/unittests/test_poisson_op.py
+++ b/python/paddle/fluid/tests/unittests/test_poisson_op.py
@@ -17,7 +17,6 @@ import paddle
 import numpy as np
 from op_test import OpTest
 import math
-import os
 from paddle.fluid.framework import _test_eager_guard
 
 paddle.enable_static()
diff --git a/python/paddle/fluid/tests/unittests/test_pool1d_api.py b/python/paddle/fluid/tests/unittests/test_pool1d_api.py
index f3a5f96d62..19d2081734 100644
--- a/python/paddle/fluid/tests/unittests/test_pool1d_api.py
+++ b/python/paddle/fluid/tests/unittests/test_pool1d_api.py
@@ -18,8 +18,6 @@ import paddle.fluid as fluid
 import paddle.fluid.core as core
 import paddle.nn.functional as F
 import numpy as np
-from op_test import OpTest
-from paddle.fluid import compiler, Program, program_guard
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_pool2d_api.py b/python/paddle/fluid/tests/unittests/test_pool2d_api.py
index 5434f53070..d20844d255 100644
--- a/python/paddle/fluid/tests/unittests/test_pool2d_api.py
+++ b/python/paddle/fluid/tests/unittests/test_pool2d_api.py
@@ -17,10 +17,9 @@ import paddle
 import numpy as np
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from op_test import OpTest
 from paddle.fluid.framework import _test_eager_guard
 from paddle.nn.functional import avg_pool2d, max_pool2d
-from test_pool2d_op import adaptive_start_index, adaptive_end_index, pool2D_forward_naive, avg_pool2D_forward_naive, max_pool2D_forward_naive
+from test_pool2d_op import avg_pool2D_forward_naive, max_pool2D_forward_naive, pool2D_forward_naive
 
 
 class TestPool2D_API(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_pool3d_api.py b/python/paddle/fluid/tests/unittests/test_pool3d_api.py
index 3128d541ec..31426fe541 100644
--- a/python/paddle/fluid/tests/unittests/test_pool3d_api.py
+++ b/python/paddle/fluid/tests/unittests/test_pool3d_api.py
@@ -17,11 +17,10 @@ import unittest
 import numpy as np
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from op_test import OpTest
 from paddle.fluid.framework import _test_eager_guard
 from paddle.nn.functional import avg_pool3d, max_pool3d
 from paddle.fluid.framework import _test_eager_guard
-from test_pool3d_op import adaptive_start_index, adaptive_end_index, pool3D_forward_naive, avg_pool3D_forward_naive, max_pool3D_forward_naive
+from test_pool3d_op import avg_pool3D_forward_naive, max_pool3D_forward_naive, pool3D_forward_naive
 
 
 class TestPool3D_API(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_pow.py b/python/paddle/fluid/tests/unittests/test_pow.py
index af9724a716..9df1af1375 100755
--- a/python/paddle/fluid/tests/unittests/test_pow.py
+++ b/python/paddle/fluid/tests/unittests/test_pow.py
@@ -17,7 +17,6 @@ import unittest
 import numpy as np
 
 import paddle
-import paddle.tensor as tensor
 from paddle.static import Program, program_guard
 
 DYNAMIC = 1
diff --git a/python/paddle/fluid/tests/unittests/test_prelu_op.py b/python/paddle/fluid/tests/unittests/test_prelu_op.py
index fdd479d269..bf6de7911d 100644
--- a/python/paddle/fluid/tests/unittests/test_prelu_op.py
+++ b/python/paddle/fluid/tests/unittests/test_prelu_op.py
@@ -15,9 +15,8 @@
 import unittest
 import numpy as np
 import paddle.fluid as fluid
-import six
 import paddle.fluid.core as core
-from paddle.fluid import Program, program_guard
+from paddle.fluid import Program
 from op_test import OpTest, skip_check_grad_ci
 import paddle
 import paddle.nn.functional as F
diff --git a/python/paddle/fluid/tests/unittests/test_print_op.py b/python/paddle/fluid/tests/unittests/test_print_op.py
index 707ec9a6d6..1dc6cca53c 100755
--- a/python/paddle/fluid/tests/unittests/test_print_op.py
+++ b/python/paddle/fluid/tests/unittests/test_print_op.py
@@ -16,7 +16,6 @@ import unittest
 
 import numpy as np
 
-from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
 import paddle.fluid.layers as layers
diff --git a/python/paddle/fluid/tests/unittests/test_prior_box_op.py b/python/paddle/fluid/tests/unittests/test_prior_box_op.py
index 0d018bf778..67d468ac62 100644
--- a/python/paddle/fluid/tests/unittests/test_prior_box_op.py
+++ b/python/paddle/fluid/tests/unittests/test_prior_box_op.py
@@ -14,7 +14,6 @@
 
 import unittest
 import numpy as np
-import sys
 import math
 from op_test import OpTest
 import paddle
diff --git a/python/paddle/fluid/tests/unittests/test_profiler.py b/python/paddle/fluid/tests/unittests/test_profiler.py
index 70867c655b..2b630ed384 100644
--- a/python/paddle/fluid/tests/unittests/test_profiler.py
+++ b/python/paddle/fluid/tests/unittests/test_profiler.py
@@ -22,7 +22,6 @@ import paddle.fluid as fluid
 import paddle.fluid.profiler as profiler
 import paddle.fluid.layers as layers
 import paddle.fluid.core as core
-from paddle.fluid import compiler, Program, program_guard
 import paddle.fluid.proto.profiler.profiler_pb2 as profiler_pb2
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_profiler_statistic.py b/python/paddle/fluid/tests/unittests/test_profiler_statistic.py
index f6269f5482..e6e7a9c8b6 100644
--- a/python/paddle/fluid/tests/unittests/test_profiler_statistic.py
+++ b/python/paddle/fluid/tests/unittests/test_profiler_statistic.py
@@ -14,7 +14,6 @@
 
 import unittest
 
-import paddle
 import paddle.profiler as profiler
 import paddle.profiler.profiler_statistic as profiler_statistic
 
diff --git a/python/paddle/fluid/tests/unittests/test_program.py b/python/paddle/fluid/tests/unittests/test_program.py
index dc3ef1fa92..71c1e9239c 100644
--- a/python/paddle/fluid/tests/unittests/test_program.py
+++ b/python/paddle/fluid/tests/unittests/test_program.py
@@ -14,7 +14,7 @@
 
 import unittest
 
-from paddle.fluid.framework import Program, default_main_program, program_guard, grad_var_name
+from paddle.fluid.framework import Program, default_main_program, program_guard
 import paddle
 import paddle.fluid.layers as layers
 import paddle.fluid as fluid
diff --git a/python/paddle/fluid/tests/unittests/test_prroi_pool_op.py b/python/paddle/fluid/tests/unittests/test_prroi_pool_op.py
index a38823dece..a927c2a5e8 100644
--- a/python/paddle/fluid/tests/unittests/test_prroi_pool_op.py
+++ b/python/paddle/fluid/tests/unittests/test_prroi_pool_op.py
@@ -18,8 +18,7 @@ from py_precise_roi_pool import PyPrRoIPool
 from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.core as core
-from paddle.fluid import compiler, Program, program_guard
+from paddle.fluid import Program, program_guard
 
 
 class TestPRROIPoolOp(OpTest):
diff --git a/python/paddle/fluid/tests/unittests/test_pull_gpups_sparse_op.py b/python/paddle/fluid/tests/unittests/test_pull_gpups_sparse_op.py
index ed8099f8ac..8bddcb6d50 100644
--- a/python/paddle/fluid/tests/unittests/test_pull_gpups_sparse_op.py
+++ b/python/paddle/fluid/tests/unittests/test_pull_gpups_sparse_op.py
@@ -16,8 +16,6 @@ import unittest
 import numpy as np
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.core as core
-from paddle.fluid import Program, program_guard
 from paddle.fluid.layers.nn import _pull_gpups_sparse
 
 paddle.enable_static()
diff --git a/python/paddle/fluid/tests/unittests/test_put_along_axis_op.py b/python/paddle/fluid/tests/unittests/test_put_along_axis_op.py
index a9be797551..43771731f9 100644
--- a/python/paddle/fluid/tests/unittests/test_put_along_axis_op.py
+++ b/python/paddle/fluid/tests/unittests/test_put_along_axis_op.py
@@ -17,9 +17,7 @@ import numpy as np
 import copy
 from op_test import OpTest
 import paddle
-import paddle.fluid as fluid
 from paddle.framework import core
-from paddle.fluid.dygraph.base import switch_to_static_graph
 
 paddle.enable_static()
 
diff --git a/python/paddle/fluid/tests/unittests/test_py_reader_pin_memory.py b/python/paddle/fluid/tests/unittests/test_py_reader_pin_memory.py
index 57f29995ff..596bc2ff83 100644
--- a/python/paddle/fluid/tests/unittests/test_py_reader_pin_memory.py
+++ b/python/paddle/fluid/tests/unittests/test_py_reader_pin_memory.py
@@ -17,7 +17,6 @@ import paddle
 import paddle.fluid as fluid
 import paddle.fluid.core as core
 import numpy as np
-from threading import Thread
 
 
 def user_reader(inputs):
diff --git a/python/paddle/fluid/tests/unittests/test_qr_op.py b/python/paddle/fluid/tests/unittests/test_qr_op.py
index 1338b8268a..4d8bfb220f 100644
--- a/python/paddle/fluid/tests/unittests/test_qr_op.py
+++ b/python/paddle/fluid/tests/unittests/test_qr_op.py
@@ -17,7 +17,6 @@ import itertools
 import numpy as np
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.layers as layers
 import paddle.fluid.core as core
 from op_test import OpTest
 
diff --git a/python/paddle/fluid/tests/unittests/test_queue.py b/python/paddle/fluid/tests/unittests/test_queue.py
index e9e7d80a3d..703c11e710 100644
--- a/python/paddle/fluid/tests/unittests/test_queue.py
+++ b/python/paddle/fluid/tests/unittests/test_queue.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import numpy as np
-import os
 import unittest
 
 import paddle.fluid as fluid
diff --git a/python/paddle/fluid/tests/unittests/test_rad2deg.py b/python/paddle/fluid/tests/unittests/test_rad2deg.py
index 948fd0fe38..00cf6e9fad 100644
--- a/python/paddle/fluid/tests/unittests/test_rad2deg.py
+++ b/python/paddle/fluid/tests/unittests/test_rad2deg.py
@@ -17,8 +17,6 @@ import numpy as np
 import paddle
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from paddle.fluid import Program, program_guard
-from op_test import OpTest
 
 paddle.enable_static()
 
diff --git a/python/paddle/fluid/tests/unittests/test_rand_op.py b/python/paddle/fluid/tests/unittests/test_rand_op.py
index 8749eee60a..b889d79b07 100644
--- a/python/paddle/fluid/tests/unittests/test_rand_op.py
+++ b/python/paddle/fluid/tests/unittests/test_rand_op.py
@@ -14,12 +14,11 @@
 
 import unittest
 import numpy as np
-from op_test import OpTest
 
 import paddle.fluid.core as core
 from paddle import rand
 import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard
+from paddle.fluid import Program, program_guard
 import paddle
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_randint_op.py b/python/paddle/fluid/tests/unittests/test_randint_op.py
index a86f042b61..549554733f 100644
--- a/python/paddle/fluid/tests/unittests/test_randint_op.py
+++ b/python/paddle/fluid/tests/unittests/test_randint_op.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 import paddle
 import unittest
 import numpy as np
diff --git a/python/paddle/fluid/tests/unittests/test_random_crop_op.py b/python/paddle/fluid/tests/unittests/test_random_crop_op.py
index 31960aa1d0..580d348156 100644
--- a/python/paddle/fluid/tests/unittests/test_random_crop_op.py
+++ b/python/paddle/fluid/tests/unittests/test_random_crop_op.py
@@ -14,7 +14,6 @@
 
 import unittest
 import numpy as np
-import paddle.fluid.core as core
 from op_test import OpTest
 import paddle.fluid as fluid
 
diff --git a/python/paddle/fluid/tests/unittests/test_random_routing_op.py b/python/paddle/fluid/tests/unittests/test_random_routing_op.py
index 1a8154c405..54313b4c10 100644
--- a/python/paddle/fluid/tests/unittests/test_random_routing_op.py
+++ b/python/paddle/fluid/tests/unittests/test_random_routing_op.py
@@ -12,15 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import op_test
 import numpy as np
 import unittest
 import paddle
 import paddle.fluid.core as core
-from paddle.fluid.op import Operator
-import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard
-from paddle.fluid.backward import append_backward
 from paddle.distributed.models.moe import utils
 from paddle.fluid.framework import _test_eager_guard
 
diff --git a/python/paddle/fluid/tests/unittests/test_random_seed.py b/python/paddle/fluid/tests/unittests/test_random_seed.py
index ce35749aee..8cb33ad538 100644
--- a/python/paddle/fluid/tests/unittests/test_random_seed.py
+++ b/python/paddle/fluid/tests/unittests/test_random_seed.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 """Test cloud role maker."""
 
-import os
 import unittest
 import paddle.fluid.generator as generator
 
diff --git a/python/paddle/fluid/tests/unittests/test_randperm_op.py b/python/paddle/fluid/tests/unittests/test_randperm_op.py
index efbb12353d..bb1e493a65 100644
--- a/python/paddle/fluid/tests/unittests/test_randperm_op.py
+++ b/python/paddle/fluid/tests/unittests/test_randperm_op.py
@@ -19,7 +19,6 @@ import paddle
 import paddle.fluid.core as core
 from paddle.static import program_guard, Program
 from paddle.fluid.framework import _test_eager_guard
-import os
 
 
 def check_randperm_out(n, data_np):
diff --git a/python/paddle/fluid/tests/unittests/test_rank_attention_op.py b/python/paddle/fluid/tests/unittests/test_rank_attention_op.py
index 1cca137823..4974fd26d1 100644
--- a/python/paddle/fluid/tests/unittests/test_rank_attention_op.py
+++ b/python/paddle/fluid/tests/unittests/test_rank_attention_op.py
@@ -16,9 +16,7 @@ import unittest
 import numpy as np
 import random
 from op_test import OpTest
-import paddle.fluid as fluid
-from paddle.fluid import Program, program_guard
-from op_test import OpTest, skip_check_grad_ci
+from op_test import OpTest
 import paddle.fluid.core as core
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_raw_program_optimizer.py b/python/paddle/fluid/tests/unittests/test_raw_program_optimizer.py
index c99fac0f0c..eb11bf975d 100644
--- a/python/paddle/fluid/tests/unittests/test_raw_program_optimizer.py
+++ b/python/paddle/fluid/tests/unittests/test_raw_program_optimizer.py
@@ -16,7 +16,6 @@ import unittest
 
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.core as core
 import paddle.distributed.fleet as fleet
 import numpy as np
 import os
diff --git a/python/paddle/fluid/tests/unittests/test_reduce_op.py b/python/paddle/fluid/tests/unittests/test_reduce_op.py
index 3929fd77e5..8dba9dd1b5 100644
--- a/python/paddle/fluid/tests/unittests/test_reduce_op.py
+++ b/python/paddle/fluid/tests/unittests/test_reduce_op.py
@@ -18,7 +18,7 @@ from op_test import OpTest, skip_check_grad_ci, convert_float_to_uint16
 import paddle
 import paddle.fluid.core as core
 import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard
+from paddle.fluid import Program, program_guard
 from paddle.fluid.framework import convert_np_dtype_to_dtype_
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_reducescatter.py b/python/paddle/fluid/tests/unittests/test_reducescatter.py
index e86acb8483..8320eb9ad5 100644
--- a/python/paddle/fluid/tests/unittests/test_reducescatter.py
+++ b/python/paddle/fluid/tests/unittests/test_reducescatter.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import numpy as np
 import paddle
 
 from test_collective_base import TestDistBase
diff --git a/python/paddle/fluid/tests/unittests/test_reducescatter_api.py b/python/paddle/fluid/tests/unittests/test_reducescatter_api.py
index 682e4c1a4e..decb90ada9 100644
--- a/python/paddle/fluid/tests/unittests/test_reducescatter_api.py
+++ b/python/paddle/fluid/tests/unittests/test_reducescatter_api.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import numpy as np
 import paddle.fluid as fluid
 import paddle
 
diff --git a/python/paddle/fluid/tests/unittests/test_regularizer.py b/python/paddle/fluid/tests/unittests/test_regularizer.py
index 8a0f2395fc..46cad0aaf7 100644
--- a/python/paddle/fluid/tests/unittests/test_regularizer.py
+++ b/python/paddle/fluid/tests/unittests/test_regularizer.py
@@ -21,7 +21,6 @@ import paddle
 import paddle.fluid.core as core
 import paddle.fluid as fluid
 import paddle.fluid.framework as framework
-import paddle.fluid.optimizer as optimizer
 import paddle.fluid.regularizer as regularizer
 from paddle.fluid.backward import append_backward
 
diff --git a/python/paddle/fluid/tests/unittests/test_regularizer_api.py b/python/paddle/fluid/tests/unittests/test_regularizer_api.py
index 79dac0e148..b4200970dc 100644
--- a/python/paddle/fluid/tests/unittests/test_regularizer_api.py
+++ b/python/paddle/fluid/tests/unittests/test_regularizer_api.py
@@ -20,10 +20,6 @@ import random
 import paddle
 import paddle.fluid.core as core
 import paddle.fluid as fluid
-import paddle.fluid.framework as framework
-import paddle.fluid.optimizer as optimizer
-import paddle.regularizer as regularizer
-from paddle.fluid.backward import append_backward
 
 
 def bow_net(data,
diff --git a/python/paddle/fluid/tests/unittests/test_renorm_op.py b/python/paddle/fluid/tests/unittests/test_renorm_op.py
index c77645dff3..f2754eb16b 100644
--- a/python/paddle/fluid/tests/unittests/test_renorm_op.py
+++ b/python/paddle/fluid/tests/unittests/test_renorm_op.py
@@ -15,7 +15,6 @@
 import unittest
 import paddle
 import numpy as np
-import paddle.fluid.core as core
 import paddle.fluid as fluid
 from paddle.fluid import Program, program_guard
 
diff --git a/python/paddle/fluid/tests/unittests/test_repeat_interleave_op.py b/python/paddle/fluid/tests/unittests/test_repeat_interleave_op.py
index 816d1c8449..fcc8647fbc 100644
--- a/python/paddle/fluid/tests/unittests/test_repeat_interleave_op.py
+++ b/python/paddle/fluid/tests/unittests/test_repeat_interleave_op.py
@@ -15,7 +15,6 @@
 import unittest
 import paddle
 import numpy as np
-import paddle.fluid.core as core
 from op_test import OpTest
 import paddle.fluid as fluid
 from paddle.fluid import Program, program_guard
diff --git a/python/paddle/fluid/tests/unittests/test_reset_grad_inplace_version.py b/python/paddle/fluid/tests/unittests/test_reset_grad_inplace_version.py
index 77a2508ae9..c28724b97a 100644
--- a/python/paddle/fluid/tests/unittests/test_reset_grad_inplace_version.py
+++ b/python/paddle/fluid/tests/unittests/test_reset_grad_inplace_version.py
@@ -13,9 +13,7 @@
 # limitations under the License.
 import numpy as np
 import paddle
-import paddle.fluid as fluid
-from paddle import _C_ops, _legacy_C_ops
-from paddle.fluid import framework
+from paddle import _legacy_C_ops
 from paddle.fluid.framework import _test_eager_guard
 import unittest
 
diff --git a/python/paddle/fluid/tests/unittests/test_reshape_op.py b/python/paddle/fluid/tests/unittests/test_reshape_op.py
index 44c91cda84..c354445209 100755
--- a/python/paddle/fluid/tests/unittests/test_reshape_op.py
+++ b/python/paddle/fluid/tests/unittests/test_reshape_op.py
@@ -18,9 +18,7 @@ import numpy as np
 from op_test import OpTest, convert_float_to_uint16
 import paddle
 import paddle.fluid as fluid
-from paddle.fluid import compiler
 from paddle.static import Program, program_guard
-import paddle.fluid.core as core
 
 
 # situation 1: have shape( list, no tensor), no actual shape(Tensor)
diff --git a/python/paddle/fluid/tests/unittests/test_retinanet_detection_output.py b/python/paddle/fluid/tests/unittests/test_retinanet_detection_output.py
index 5f57d46107..61bcb87521 100644
--- a/python/paddle/fluid/tests/unittests/test_retinanet_detection_output.py
+++ b/python/paddle/fluid/tests/unittests/test_retinanet_detection_output.py
@@ -15,10 +15,8 @@
 import unittest
 import numpy as np
 import math
-import copy
 from op_test import OpTest
 from test_anchor_generator_op import anchor_generator_in_python
-from test_multiclass_nms_op import iou
 from test_multiclass_nms_op import nms
 import paddle.fluid as fluid
 from paddle.fluid import Program, program_guard
diff --git a/python/paddle/fluid/tests/unittests/test_rnn_decode_api.py b/python/paddle/fluid/tests/unittests/test_rnn_decode_api.py
index 6bae563b32..a6f7b6ea8c 100644
--- a/python/paddle/fluid/tests/unittests/test_rnn_decode_api.py
+++ b/python/paddle/fluid/tests/unittests/test_rnn_decode_api.py
@@ -28,7 +28,6 @@ import paddle.fluid.layers as layers
 import paddle.fluid.core as core
 
 from paddle.fluid.executor import Executor
-from paddle.fluid import framework
 from paddle.fluid.framework import _test_eager_guard
 
 paddle.enable_static()
diff --git a/python/paddle/fluid/tests/unittests/test_rnn_memory_helper_op.py b/python/paddle/fluid/tests/unittests/test_rnn_memory_helper_op.py
index c10eb19552..aa5b852ff8 100644
--- a/python/paddle/fluid/tests/unittests/test_rnn_memory_helper_op.py
+++ b/python/paddle/fluid/tests/unittests/test_rnn_memory_helper_op.py
@@ -16,7 +16,6 @@ import unittest
 
 from paddle.fluid.framework import Program
 from paddle.fluid.executor import Executor
-from paddle.fluid.backward import append_backward
 import numpy as np
 import paddle.fluid.core as core
 
diff --git a/python/paddle/fluid/tests/unittests/test_rnn_op.py b/python/paddle/fluid/tests/unittests/test_rnn_op.py
index 3bf6701e25..ecf79cabab 100644
--- a/python/paddle/fluid/tests/unittests/test_rnn_op.py
+++ b/python/paddle/fluid/tests/unittests/test_rnn_op.py
@@ -14,18 +14,15 @@
 
 import unittest
 import numpy as np
-import math
 import paddle.fluid.core as core
 import paddle
-import paddle.fluid as fluid
-import paddle.fluid.layers as layers
 import random
 import sys
 
 from op_test import OpTest
 
 sys.path.append("./rnn")
-from rnn_numpy import SimpleRNN, LSTM, GRU
+from rnn_numpy import LSTM
 from convert import get_params_for_net
 
 random.seed(2)
diff --git a/python/paddle/fluid/tests/unittests/test_roi_align_op.py b/python/paddle/fluid/tests/unittests/test_roi_align_op.py
index e9a1508bb5..d9111adceb 100644
--- a/python/paddle/fluid/tests/unittests/test_roi_align_op.py
+++ b/python/paddle/fluid/tests/unittests/test_roi_align_op.py
@@ -16,7 +16,6 @@ import paddle
 import unittest
 import numpy as np
 import math
-import sys
 from op_test import OpTest
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_roi_perspective_transform_op.py b/python/paddle/fluid/tests/unittests/test_roi_perspective_transform_op.py
index f3cb5af79f..ff68055904 100644
--- a/python/paddle/fluid/tests/unittests/test_roi_perspective_transform_op.py
+++ b/python/paddle/fluid/tests/unittests/test_roi_perspective_transform_op.py
@@ -14,9 +14,6 @@
 
 import unittest
 import numpy as np
-import math
-import sys
-import paddle.compat as cpt
 from op_test import OpTest
 from math import sqrt
 from math import floor
diff --git a/python/paddle/fluid/tests/unittests/test_roll_op.py b/python/paddle/fluid/tests/unittests/test_roll_op.py
index 9fad220202..43e56efd64 100644
--- a/python/paddle/fluid/tests/unittests/test_roll_op.py
+++ b/python/paddle/fluid/tests/unittests/test_roll_op.py
@@ -15,7 +15,6 @@
 import unittest
 import paddle
 import numpy as np
-import paddle.fluid.core as core
 from op_test import OpTest
 import paddle.fluid as fluid
 from paddle.fluid import Program, program_guard
diff --git a/python/paddle/fluid/tests/unittests/test_rot90_op.py b/python/paddle/fluid/tests/unittests/test_rot90_op.py
index 5fd5455501..6a1cbcaccd 100644
--- a/python/paddle/fluid/tests/unittests/test_rot90_op.py
+++ b/python/paddle/fluid/tests/unittests/test_rot90_op.py
@@ -16,8 +16,6 @@ import unittest
 import numpy as np
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.core as core
-from paddle.fluid import Program, program_guard
 
 
 class TestRot90_API(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_rpn_target_assign_op.py b/python/paddle/fluid/tests/unittests/test_rpn_target_assign_op.py
index d07506a4db..de3e8e2113 100644
--- a/python/paddle/fluid/tests/unittests/test_rpn_target_assign_op.py
+++ b/python/paddle/fluid/tests/unittests/test_rpn_target_assign_op.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 import paddle.fluid as fluid
-import paddle.fluid.core as core
 from paddle.fluid import Program, program_guard
 from op_test import OpTest
 from test_anchor_generator_op import anchor_generator_in_python
diff --git a/python/paddle/fluid/tests/unittests/test_run.py b/python/paddle/fluid/tests/unittests/test_run.py
index 2a9f69bff1..15af313b44 100644
--- a/python/paddle/fluid/tests/unittests/test_run.py
+++ b/python/paddle/fluid/tests/unittests/test_run.py
@@ -15,8 +15,6 @@
 import unittest
 import subprocess
 import sys, os
-import json
-import shutil
 import tempfile
 
 import random
diff --git a/python/paddle/fluid/tests/unittests/test_run_program_op.py b/python/paddle/fluid/tests/unittests/test_run_program_op.py
index 5696f0aff8..56fda34c20 100644
--- a/python/paddle/fluid/tests/unittests/test_run_program_op.py
+++ b/python/paddle/fluid/tests/unittests/test_run_program_op.py
@@ -18,10 +18,10 @@ import numpy as np
 import six
 
 import paddle
-from paddle import _C_ops, _legacy_C_ops
+from paddle import _legacy_C_ops
 import paddle.fluid as fluid
 from paddle import compat as cpt
-from paddle.fluid import core, framework, executor
+from paddle.fluid import core, framework
 from paddle.fluid.layers.utils import _hash_with_id
 from paddle.fluid.framework import _in_eager_mode_
 from paddle.fluid.executor import _is_enable_standalone_executor, _is_dy2st_enable_standalone_executor
diff --git a/python/paddle/fluid/tests/unittests/test_runtime_and_compiletime_exception.py b/python/paddle/fluid/tests/unittests/test_runtime_and_compiletime_exception.py
index 95fe9b5556..36ccb8e032 100644
--- a/python/paddle/fluid/tests/unittests/test_runtime_and_compiletime_exception.py
+++ b/python/paddle/fluid/tests/unittests/test_runtime_and_compiletime_exception.py
@@ -14,10 +14,8 @@
 
 import unittest
 import numpy as np
-from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.core as core
 
 
 class TestRunTimeException(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_sampling_id_op.py b/python/paddle/fluid/tests/unittests/test_sampling_id_op.py
index f9271f475f..3481db2290 100644
--- a/python/paddle/fluid/tests/unittests/test_sampling_id_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sampling_id_op.py
@@ -14,11 +14,8 @@
 
 import unittest
 import numpy as np
-from op_test import OpTest
 
-import paddle.fluid.core as core
 import paddle.fluid as fluid
-from paddle.fluid.op import Operator
 import paddle
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_save_inference_model_conditional_op.py b/python/paddle/fluid/tests/unittests/test_save_inference_model_conditional_op.py
index 302c505706..240c0c8e12 100644
--- a/python/paddle/fluid/tests/unittests/test_save_inference_model_conditional_op.py
+++ b/python/paddle/fluid/tests/unittests/test_save_inference_model_conditional_op.py
@@ -14,11 +14,9 @@
 
 import os
 import unittest
-import numpy as np
 import tempfile
 
 import paddle
-import paddle.fluid as fluid
 import paddle.nn.functional as F
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_save_model_without_var.py b/python/paddle/fluid/tests/unittests/test_save_model_without_var.py
index df520f8716..e8cad31514 100644
--- a/python/paddle/fluid/tests/unittests/test_save_model_without_var.py
+++ b/python/paddle/fluid/tests/unittests/test_save_model_without_var.py
@@ -12,13 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import numpy as np
 import warnings
 import unittest
-import paddle
 import paddle.fluid as fluid
-from paddle.fluid.layers.device import get_places
-from paddle.fluid.executor import as_numpy
 
 
 class TestSaveModelWithoutVar(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_saved_tensors_hooks.py b/python/paddle/fluid/tests/unittests/test_saved_tensors_hooks.py
index 7d2791d305..02b9d146fe 100644
--- a/python/paddle/fluid/tests/unittests/test_saved_tensors_hooks.py
+++ b/python/paddle/fluid/tests/unittests/test_saved_tensors_hooks.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import numpy as np
 import paddle
 from paddle.autograd import PyLayer
 
diff --git a/python/paddle/fluid/tests/unittests/test_scope.py b/python/paddle/fluid/tests/unittests/test_scope.py
index 66187e9548..ddd26ad1f3 100644
--- a/python/paddle/fluid/tests/unittests/test_scope.py
+++ b/python/paddle/fluid/tests/unittests/test_scope.py
@@ -14,7 +14,6 @@
 
 import paddle.fluid.core
 import unittest
-import six
 
 
 class TestScope(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_searchsorted_op.py b/python/paddle/fluid/tests/unittests/test_searchsorted_op.py
index a112ad1fa5..e63107026e 100644
--- a/python/paddle/fluid/tests/unittests/test_searchsorted_op.py
+++ b/python/paddle/fluid/tests/unittests/test_searchsorted_op.py
@@ -16,7 +16,6 @@ import unittest
 import numpy as np
 from op_test import OpTest
 import paddle
-import paddle.fluid as fluid
 import paddle.fluid.core as core
 
 paddle.enable_static()
diff --git a/python/paddle/fluid/tests/unittests/test_segment_ops.py b/python/paddle/fluid/tests/unittests/test_segment_ops.py
index 32d869f010..71672723e8 100644
--- a/python/paddle/fluid/tests/unittests/test_segment_ops.py
+++ b/python/paddle/fluid/tests/unittests/test_segment_ops.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import sys
 
 import numpy as np
 import paddle
diff --git a/python/paddle/fluid/tests/unittests/test_selu_op.py b/python/paddle/fluid/tests/unittests/test_selu_op.py
index 62fd75ffad..5de31d26b2 100644
--- a/python/paddle/fluid/tests/unittests/test_selu_op.py
+++ b/python/paddle/fluid/tests/unittests/test_selu_op.py
@@ -14,14 +14,11 @@
 
 import unittest
 import numpy as np
-import six
 import paddle.fluid.core as core
 from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
-import paddle.nn as nn
 import paddle.nn.functional as F
-from paddle.fluid import compiler, Program, program_guard
 
 
 def ref_selu(x,
diff --git a/python/paddle/fluid/tests/unittests/test_set_value_op.py b/python/paddle/fluid/tests/unittests/test_set_value_op.py
index d47db363dc..ab5382ce5e 100644
--- a/python/paddle/fluid/tests/unittests/test_set_value_op.py
+++ b/python/paddle/fluid/tests/unittests/test_set_value_op.py
@@ -21,7 +21,7 @@ import paddle
 import paddle.fluid as fluid
 from paddle.fluid.layer_helper import LayerHelper
 from functools import reduce
-from paddle.fluid.framework import _test_eager_guard, _in_legacy_dygraph
+from paddle.fluid.framework import _test_eager_guard
 
 
 class TestSetValueBase(unittest.TestCase):
diff --git a/python/paddle/fluid/tests/unittests/test_shard_index_op.py b/python/paddle/fluid/tests/unittests/test_shard_index_op.py
index 56ac02185b..5c51b3cf58 100644
--- a/python/paddle/fluid/tests/unittests/test_shard_index_op.py
+++ b/python/paddle/fluid/tests/unittests/test_shard_index_op.py
@@ -14,12 +14,7 @@
 
 import unittest
 import numpy as np
-import math
 from op_test import OpTest
-import paddle.fluid as fluid
-import paddle.fluid.core as core
-import paddle.fluid.framework as framework
-from paddle.fluid.framework import Program, program_guard
 
 
 def common_setup(self, index_num, nshards, shard_id, ignore_value):
diff --git a/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py b/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py
index deaadb2a9a..9e76585912 100644
--- a/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py
+++ b/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py
@@ -18,7 +18,7 @@ import paddle.fluid.core as core
 from paddle.fluid.executor import Executor
 import paddle.fluid.layers as layers
 from paddle.fluid.backward import append_backward
-from paddle.fluid.framework import default_main_program, switch_main_program
+from paddle.fluid.framework import switch_main_program
 from paddle.fluid.framework import Program, program_guard
 import numpy as np
 
diff --git a/python/paddle/fluid/tests/unittests/test_shuffle_batch_op.py b/python/paddle/fluid/tests/unittests/test_shuffle_batch_op.py
index 18653021ad..7752cfa3a6 100644
--- a/python/paddle/fluid/tests/unittests/test_shuffle_batch_op.py
+++ b/python/paddle/fluid/tests/unittests/test_shuffle_batch_op.py
@@ -16,11 +16,8 @@
 import unittest
 import numpy as np
 import paddle.fluid as fluid
-import paddle.fluid.core as core
-import paddle.fluid.layers as layers
 from op_test import OpTest
 import os
-import random
 
 
 class TestShuffleBatchOpBase(OpTest):
diff --git a/python/paddle/fluid/tests/unittests/test_shuffle_channel_op.py b/python/paddle/fluid/tests/unittests/test_shuffle_channel_op.py
index fabc3c9cbd..594df3f6c0 100644
--- a/python/paddle/fluid/tests/unittests/test_shuffle_channel_op.py
+++ b/python/paddle/fluid/tests/unittests/test_shuffle_channel_op.py
@@ -14,10 +14,7 @@
 
 import unittest
 import numpy as np
-import sys
-import math
 from op_test import OpTest
-import paddle.fluid.core as core
 
 
 class TestShuffleChannelOp(OpTest):
diff --git a/python/paddle/fluid/tests/unittests/test_sigmoid_cross_entropy_with_logits_op.py b/python/paddle/fluid/tests/unittests/test_sigmoid_cross_entropy_with_logits_op.py
index 56b2d4061d..f6ea5018ea 100644
--- a/python/paddle/fluid/tests/unittests/test_sigmoid_cross_entropy_with_logits_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sigmoid_cross_entropy_with_logits_op.py
@@ -16,9 +16,8 @@ import numpy as np
 from op_test import OpTest
 from scipy.special import logit
 from scipy.special import expit
-import paddle.fluid.core as core
 import unittest
-from paddle.fluid import compiler, Program, program_guard
+from paddle.fluid import Program, program_guard
 import paddle.fluid as fluid
 import paddle
 
diff --git a/python/paddle/fluid/tests/unittests/test_sigmoid_focal_loss.py b/python/paddle/fluid/tests/unittests/test_sigmoid_focal_loss.py
index ea697a4869..a3b614cb51 100644
--- a/python/paddle/fluid/tests/unittests/test_sigmoid_focal_loss.py
+++ b/python/paddle/fluid/tests/unittests/test_sigmoid_focal_loss.py
@@ -16,8 +16,6 @@ import paddle
 import paddle.fluid as fluid
 import numpy as np
 import unittest
-from op_test import OpTest
-from test_sigmoid_focal_loss_op import sigmoid_focal_loss_forward
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_similarity_focus_op.py b/python/paddle/fluid/tests/unittests/test_similarity_focus_op.py
index fb29d08f34..d7d13bdd39 100755
--- a/python/paddle/fluid/tests/unittests/test_similarity_focus_op.py
+++ b/python/paddle/fluid/tests/unittests/test_similarity_focus_op.py
@@ -14,7 +14,6 @@
 
 import unittest
 import numpy as np
-import paddle.fluid.core as core
 from op_test import OpTest
 import paddle.fluid as fluid
 from paddle.fluid import Program, program_guard
diff --git a/python/paddle/fluid/tests/unittests/test_simple_rnn_op.py b/python/paddle/fluid/tests/unittests/test_simple_rnn_op.py
index 7676e15a74..4a0f02204c 100644
--- a/python/paddle/fluid/tests/unittests/test_simple_rnn_op.py
+++ b/python/paddle/fluid/tests/unittests/test_simple_rnn_op.py
@@ -14,13 +14,10 @@
 
 import unittest
 import numpy as np
-import math
 
 from op_test import OpTest
 import paddle
-import paddle.fluid as fluid
 import paddle.fluid.core as core
-import paddle.fluid.layers as layers
 import random
 import sys
 
diff --git a/python/paddle/fluid/tests/unittests/test_slice_var.py b/python/paddle/fluid/tests/unittests/test_slice_var.py
index ce11c8b963..a48b6de556 100644
--- a/python/paddle/fluid/tests/unittests/test_slice_var.py
+++ b/python/paddle/fluid/tests/unittests/test_slice_var.py
@@ -12,11 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import math
 import unittest
 from paddle.fluid.transpiler.distribute_transpiler import slice_variable
 import paddle.fluid as fluid
-import paddle.fluid.core as core
 import random
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_softmax2d.py b/python/paddle/fluid/tests/unittests/test_softmax2d.py
index b4dc300789..c5e45dec22 100644
--- a/python/paddle/fluid/tests/unittests/test_softmax2d.py
+++ b/python/paddle/fluid/tests/unittests/test_softmax2d.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 import paddle
-import paddle.fluid as fluid
 import paddle.fluid.core as core
 from test_softmax_op import ref_softmax
 
diff --git a/python/paddle/fluid/tests/unittests/test_softmax_op.py b/python/paddle/fluid/tests/unittests/test_softmax_op.py
index 9626ae9f78..13a43e4d3e 100644
--- a/python/paddle/fluid/tests/unittests/test_softmax_op.py
+++ b/python/paddle/fluid/tests/unittests/test_softmax_op.py
@@ -16,8 +16,6 @@ import unittest
 import numpy as np
 from op_test import OpTest, convert_float_to_uint16
 import paddle.fluid.core as core
-import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard
 import paddle
 import paddle.nn.functional as F
 
diff --git a/python/paddle/fluid/tests/unittests/test_solve_op.py b/python/paddle/fluid/tests/unittests/test_solve_op.py
index 128716d9a8..b07c3d5d08 100644
--- a/python/paddle/fluid/tests/unittests/test_solve_op.py
+++ b/python/paddle/fluid/tests/unittests/test_solve_op.py
@@ -616,10 +616,8 @@ class TestSolveOpSingularAPI(unittest.TestCase):
                                   fetch_list=[result])
             except RuntimeError as ex:
                 print("The mat is singular")
-                pass
             except ValueError as ex:
                 print("The mat is singular")
-                pass
 
     def test_static(self):
         for place in self.places:
@@ -637,10 +635,8 @@ class TestSolveOpSingularAPI(unittest.TestCase):
                     result = paddle.linalg.solve(input_x, input_y)
                 except RuntimeError as ex:
                     print("The mat is singular")
-                    pass
                 except ValueError as ex:
                     print("The mat is singular")
-                    pass
 
     def test_dygraph(self):
         with _test_eager_guard():
diff --git a/python/paddle/fluid/tests/unittests/test_sort_op.py b/python/paddle/fluid/tests/unittests/test_sort_op.py
index 7477c479e3..d28af8f684 100644
--- a/python/paddle/fluid/tests/unittests/test_sort_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sort_op.py
@@ -15,9 +15,7 @@
 import unittest
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.layers as layers
 import numpy as np
-import six
 import paddle.fluid.core as core
 from paddle.fluid.framework import _test_eager_guard
 
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_addmm_op.py b/python/paddle/fluid/tests/unittests/test_sparse_addmm_op.py
index ffd81640d7..2e610d28dc 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_addmm_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_addmm_op.py
@@ -14,8 +14,6 @@
 
 import paddle
 import numpy as np
-import scipy
-import scipy.sparse as sp
 import unittest
 import os
 import re
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_attention_op.py b/python/paddle/fluid/tests/unittests/test_sparse_attention_op.py
index 4337461d48..6e077502c0 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_attention_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_attention_op.py
@@ -16,10 +16,8 @@ import unittest
 import numpy as np
 from op_test import OpTest
 import paddle.fluid.core as core
-from paddle.static import Program, program_guard
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.framework as framework
 import paddle.nn.functional as F
 import os
 import re
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_conv_op.py b/python/paddle/fluid/tests/unittests/test_sparse_conv_op.py
index 9d5fbb5646..37418f5fa0 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_conv_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_conv_op.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 import paddle
-from paddle import _C_ops, _legacy_C_ops
 from paddle.fluid import core
 from paddle.fluid.framework import _test_eager_guard
 import paddle.incubate.sparse as sparse
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_copy_op.py b/python/paddle/fluid/tests/unittests/test_sparse_copy_op.py
index 2646b3c4c8..587e4b6d68 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_copy_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_copy_op.py
@@ -15,8 +15,6 @@
 import unittest
 import numpy as np
 import paddle
-from paddle import _C_ops, _legacy_C_ops
-from paddle.fluid import core
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_matmul_op.py b/python/paddle/fluid/tests/unittests/test_sparse_matmul_op.py
index 47f334b1a3..7066951e5e 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_matmul_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_matmul_op.py
@@ -14,7 +14,6 @@
 
 import paddle
 import numpy as np
-import scipy
 import scipy.sparse as sp
 import unittest
 import os
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_momentum_op.py b/python/paddle/fluid/tests/unittests/test_sparse_momentum_op.py
index 1af9404ecf..bcc555b9a3 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_momentum_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_momentum_op.py
@@ -14,11 +14,7 @@
 
 import unittest
 import numpy as np
-import paddle.fluid.core as core
-from paddle.fluid.op import Operator
 from op_test import OpTest
-import paddle
-import paddle.fluid as fluid
 
 
 def calculate_sparse_momentum_by_numpy(param,
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_mv_op.py b/python/paddle/fluid/tests/unittests/test_sparse_mv_op.py
index 1631a2a7a5..277f78c670 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_mv_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_mv_op.py
@@ -16,8 +16,6 @@ import paddle
 from paddle.fluid.framework import _test_eager_guard
 
 import numpy as np
-import scipy
-import scipy.sparse as sp
 import unittest
 import os
 import re
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_pooling_op.py b/python/paddle/fluid/tests/unittests/test_sparse_pooling_op.py
index f3ce4adb33..5a244dce26 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_pooling_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_pooling_op.py
@@ -15,8 +15,6 @@
 import unittest
 import numpy as np
 import paddle
-import paddle.fluid.core as core
-from paddle import _C_ops, _legacy_C_ops
 from paddle.fluid.framework import _test_eager_guard
 import copy
 
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_softmax_op.py b/python/paddle/fluid/tests/unittests/test_sparse_softmax_op.py
index 76751e0f87..ede3375433 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_softmax_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_softmax_op.py
@@ -16,12 +16,8 @@ import paddle
 from paddle.fluid.framework import _test_eager_guard
 
 import numpy as np
-import scipy
 import scipy.sparse as sp
 import unittest
-import os
-import re
-import math
 
 np.random.seed(2022)
 
diff --git a/python/paddle/fluid/tests/unittests/test_sparse_utils_op.py b/python/paddle/fluid/tests/unittests/test_sparse_utils_op.py
index 940bfbff8b..62a1da98d2 100644
--- a/python/paddle/fluid/tests/unittests/test_sparse_utils_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sparse_utils_op.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 import paddle
-from paddle.incubate import sparse
 import paddle.fluid as fluid
 import paddle.fluid.core as core
 from paddle.fluid.framework import _test_eager_guard
diff --git a/python/paddle/fluid/tests/unittests/test_spawn_and_init_parallel_env.py b/python/paddle/fluid/tests/unittests/test_spawn_and_init_parallel_env.py
index 4e22d2dfaf..1b230df912 100644
--- a/python/paddle/fluid/tests/unittests/test_spawn_and_init_parallel_env.py
+++ b/python/paddle/fluid/tests/unittests/test_spawn_and_init_parallel_env.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import os
-import numpy as np
 import unittest
 
 import paddle
diff --git a/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py b/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py
index ed1be6dc43..c310819bf1 100644
--- a/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py
+++ b/python/paddle/fluid/tests/unittests/test_spectral_norm_op.py
@@ -17,7 +17,6 @@ import numpy as np
 import paddle.fluid as fluid
 from op_test import OpTest, skip_check_grad_ci
 
-from paddle.fluid import core
 from paddle.fluid.framework import program_guard, Program
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_split_op.py b/python/paddle/fluid/tests/unittests/test_split_op.py
index 4bbaf4df77..14ba9eb45a 100644
--- a/python/paddle/fluid/tests/unittests/test_split_op.py
+++ b/python/paddle/fluid/tests/unittests/test_split_op.py
@@ -17,7 +17,7 @@ import unittest
 import numpy as np
 from op_test import OpTest, convert_float_to_uint16
 import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard, core
+from paddle.fluid import Program, core, program_guard
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_split_program.py b/python/paddle/fluid/tests/unittests/test_split_program.py
index 7ed33ebde4..761c5ed558 100644
--- a/python/paddle/fluid/tests/unittests/test_split_program.py
+++ b/python/paddle/fluid/tests/unittests/test_split_program.py
@@ -17,7 +17,6 @@ from paddle.vision.models import resnet18 as resnet
 import paddle
 import paddle.nn as nn
 import unittest
-import json
 import numpy as np
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_splits_api.py b/python/paddle/fluid/tests/unittests/test_splits_api.py
index 4b6254e266..3613c7be3b 100644
--- a/python/paddle/fluid/tests/unittests/test_splits_api.py
+++ b/python/paddle/fluid/tests/unittests/test_splits_api.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 import paddle
-import paddle.fluid as fluid
 import paddle.fluid.core as core
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_square_error_cost.py b/python/paddle/fluid/tests/unittests/test_square_error_cost.py
index 7de16ae17f..89001fe78b 100644
--- a/python/paddle/fluid/tests/unittests/test_square_error_cost.py
+++ b/python/paddle/fluid/tests/unittests/test_square_error_cost.py
@@ -14,7 +14,6 @@
 
 import unittest
 import numpy as np
-import sys
 import paddle.fluid.core as core
 import paddle.fluid as fluid
 import paddle.fluid.layers as layers
diff --git a/python/paddle/fluid/tests/unittests/test_squeeze_op.py b/python/paddle/fluid/tests/unittests/test_squeeze_op.py
index de7e3629b0..53b5cb2725 100755
--- a/python/paddle/fluid/tests/unittests/test_squeeze_op.py
+++ b/python/paddle/fluid/tests/unittests/test_squeeze_op.py
@@ -18,7 +18,7 @@ import numpy as np
 
 import paddle
 import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard
+from paddle.fluid import Program, program_guard
 from op_test import OpTest, convert_float_to_uint16
 import paddle.fluid.core as core
 import gradient_checker
diff --git a/python/paddle/fluid/tests/unittests/test_stack_op.py b/python/paddle/fluid/tests/unittests/test_stack_op.py
index 8fc004838d..adf358055f 100644
--- a/python/paddle/fluid/tests/unittests/test_stack_op.py
+++ b/python/paddle/fluid/tests/unittests/test_stack_op.py
@@ -17,7 +17,6 @@ import unittest
 import paddle
 import paddle.fluid as fluid
 from op_test import OpTest, convert_float_to_uint16
-import paddle.fluid.core as core
 from paddle.fluid.framework import Program, program_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_static_save_load.py b/python/paddle/fluid/tests/unittests/test_static_save_load.py
index 7a22c1a4c7..562477a055 100644
--- a/python/paddle/fluid/tests/unittests/test_static_save_load.py
+++ b/python/paddle/fluid/tests/unittests/test_static_save_load.py
@@ -18,14 +18,10 @@ import unittest
 import paddle
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from paddle.nn import Embedding
 import paddle.fluid.framework as framework
 from paddle.fluid.optimizer import Adam
-from paddle.fluid.dygraph.base import to_variable
 from test_imperative_base import new_program_scope
-from paddle.fluid.executor import global_scope
 import numpy as np
-import six
 import pickle
 import os
 import errno
diff --git a/python/paddle/fluid/tests/unittests/test_static_save_load_large.py b/python/paddle/fluid/tests/unittests/test_static_save_load_large.py
index d9d2b7dd47..61568b50c1 100644
--- a/python/paddle/fluid/tests/unittests/test_static_save_load_large.py
+++ b/python/paddle/fluid/tests/unittests/test_static_save_load_large.py
@@ -19,7 +19,6 @@ import paddle.fluid.framework as framework
 from test_imperative_base import new_program_scope
 
 import numpy as np
-import pickle
 import os
 import tempfile
 
diff --git a/python/paddle/fluid/tests/unittests/test_sum_op.py b/python/paddle/fluid/tests/unittests/test_sum_op.py
index 3f3eb6067f..7d99391e5b 100644
--- a/python/paddle/fluid/tests/unittests/test_sum_op.py
+++ b/python/paddle/fluid/tests/unittests/test_sum_op.py
@@ -25,7 +25,6 @@ from paddle.fluid.op import Operator
 from paddle.fluid.tests.unittests.op_test import (OpTest,
                                                   convert_float_to_uint16,
                                                   convert_uint16_to_float)
-from paddle import _C_ops, _legacy_C_ops
 from paddle.fluid.framework import _test_eager_guard
 import paddle.inference as paddle_infer
 import gradient_checker
diff --git a/python/paddle/fluid/tests/unittests/test_svd_op.py b/python/paddle/fluid/tests/unittests/test_svd_op.py
index dcef3081fd..aca403dac0 100644
--- a/python/paddle/fluid/tests/unittests/test_svd_op.py
+++ b/python/paddle/fluid/tests/unittests/test_svd_op.py
@@ -16,11 +16,8 @@ import unittest
 import numpy as np
 import paddle
 import paddle.fluid as fluid
-import paddle.fluid.layers as layers
 import paddle.fluid.core as core
 from op_test import OpTest, skip_check_grad_ci
-from gradient_checker import grad_check
-from decorator_helper import prog_scope
 
 
 class TestSvdOp(OpTest):
diff --git a/python/paddle/fluid/tests/unittests/test_take_along_axis_op.py b/python/paddle/fluid/tests/unittests/test_take_along_axis_op.py
index a324db9b91..947ea1fb6f 100644
--- a/python/paddle/fluid/tests/unittests/test_take_along_axis_op.py
+++ b/python/paddle/fluid/tests/unittests/test_take_along_axis_op.py
@@ -16,9 +16,7 @@ import unittest
 import numpy as np
 from op_test import OpTest
 import paddle
-import paddle.fluid as fluid
 from paddle.framework import core
-from paddle.fluid.dygraph.base import switch_to_static_graph
 
 paddle.enable_static()
 
diff --git a/python/paddle/fluid/tests/unittests/test_tdm_child_op.py b/python/paddle/fluid/tests/unittests/test_tdm_child_op.py
index 3be20e09c7..5c17b737ee 100644
--- a/python/paddle/fluid/tests/unittests/test_tdm_child_op.py
+++ b/python/paddle/fluid/tests/unittests/test_tdm_child_op.py
@@ -15,12 +15,7 @@
 import unittest
 import numpy as np
 from op_test import OpTest
-import paddle.fluid.core as core
-from paddle.fluid.op import Operator
-import paddle.fluid.layers as layers
 import paddle.fluid as fluid
-import random
-import six
 
 
 def create_tdm_tree():
diff --git a/python/paddle/fluid/tests/unittests/test_tdm_sampler_op.py b/python/paddle/fluid/tests/unittests/test_tdm_sampler_op.py
index 2d8e5634d7..1d576038e7 100644
--- a/python/paddle/fluid/tests/unittests/test_tdm_sampler_op.py
+++ b/python/paddle/fluid/tests/unittests/test_tdm_sampler_op.py
@@ -17,12 +17,7 @@ import unittest
 import numpy as np
 from op_test import OpTest
 import paddle.fluid.core as core
-from paddle.fluid.op import Operator
-import paddle.fluid.layers as layers
 import paddle.fluid as fluid
-import random
-import six
-from sys import version_info
 
 
 def create_tdm_travel():
diff --git a/python/paddle/fluid/tests/unittests/test_teacher_student_sigmoid_loss_op.py b/python/paddle/fluid/tests/unittests/test_teacher_student_sigmoid_loss_op.py
index 6890e7d3a0..228ecbb06e 100644
--- a/python/paddle/fluid/tests/unittests/test_teacher_student_sigmoid_loss_op.py
+++ b/python/paddle/fluid/tests/unittests/test_teacher_student_sigmoid_loss_op.py
@@ -17,7 +17,6 @@ from math import log
 from math import exp
 from op_test import OpTest
 from scipy.special import logit
-from scipy.special import expit
 import unittest
 import paddle.fluid as fluid
 
diff --git a/python/paddle/fluid/tests/unittests/test_tensor_array_to_tensor.py b/python/paddle/fluid/tests/unittests/test_tensor_array_to_tensor.py
index 7071b58855..0291052a7e 100644
--- a/python/paddle/fluid/tests/unittests/test_tensor_array_to_tensor.py
+++ b/python/paddle/fluid/tests/unittests/test_tensor_array_to_tensor.py
@@ -16,8 +16,6 @@ import unittest
 import numpy as np
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from paddle.fluid.op import Operator
-from paddle.fluid.executor import Executor
 from paddle.fluid import Program, program_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_.py b/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_.py
index da8ca1f2d6..3eaf01642a 100644
--- a/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_.py
+++ b/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_.py
@@ -15,7 +15,6 @@
 import paddle.fluid as fluid
 import unittest
 import numpy as np
-import six
 import paddle
 from paddle.fluid.framework import _test_eager_guard
 
diff --git a/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor.py b/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor.py
index 37fee3a380..3aa2ac9612 100644
--- a/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor.py
+++ b/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor.py
@@ -16,7 +16,6 @@ import paddle.fluid as fluid
 import paddle.nn.functional as F
 import unittest
 import numpy as np
-import six
 import paddle
 from paddle.fluid.framework import _enable_legacy_dygraph
 
diff --git a/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor_.py b/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor_.py
index 0360804641..eb223dc631 100644
--- a/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor_.py
+++ b/python/paddle/fluid/tests/unittests/test_tensor_fill_diagonal_tensor_.py
@@ -16,7 +16,6 @@ import paddle.fluid as fluid
 import paddle.nn.functional as F
 import unittest
 import numpy as np
-import six
 import paddle
 from paddle.fluid.framework import _test_eager_guard
 
diff --git a/python/paddle/fluid/tests/unittests/test_tensor_type_promotion.py b/python/paddle/fluid/tests/unittests/test_tensor_type_promotion.py
index 9137ba7c6d..4e31fec354 100644
--- a/python/paddle/fluid/tests/unittests/test_tensor_type_promotion.py
+++ b/python/paddle/fluid/tests/unittests/test_tensor_type_promotion.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import numpy as np
 import warnings
 import paddle
 from paddle.fluid.framework import _test_eager_guard
diff --git a/python/paddle/fluid/tests/unittests/test_tensordot.py b/python/paddle/fluid/tests/unittests/test_tensordot.py
index bcba40090b..c0fb398d83 100644
--- a/python/paddle/fluid/tests/unittests/test_tensordot.py
+++ b/python/paddle/fluid/tests/unittests/test_tensordot.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import itertools as it
 import numpy as np
 import unittest
 
diff --git a/python/paddle/fluid/tests/unittests/test_tf32_cublas.py b/python/paddle/fluid/tests/unittests/test_tf32_cublas.py
index f59b7e06c7..91dbb9938b 100644
--- a/python/paddle/fluid/tests/unittests/test_tf32_cublas.py
+++ b/python/paddle/fluid/tests/unittests/test_tf32_cublas.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import unittest
-import six
 import numpy as np
 import paddle
 import paddle.fluid as fluid
diff --git a/python/paddle/fluid/tests/unittests/test_tf32_cudnn.py b/python/paddle/fluid/tests/unittests/test_tf32_cudnn.py
index fb1687bc1b..e50bc28133 100644
--- a/python/paddle/fluid/tests/unittests/test_tf32_cudnn.py
+++ b/python/paddle/fluid/tests/unittests/test_tf32_cudnn.py
@@ -13,10 +13,6 @@
 # limitations under the License.
 
 import unittest
-import six
-import numpy as np
-import paddle
-import paddle.fluid as fluid
 import paddle.fluid.core as core
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_tile_op.py b/python/paddle/fluid/tests/unittests/test_tile_op.py
index 9cc05042a7..7180e76aa4 100644
--- a/python/paddle/fluid/tests/unittests/test_tile_op.py
+++ b/python/paddle/fluid/tests/unittests/test_tile_op.py
@@ -17,7 +17,7 @@ import numpy as np
 from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
-from paddle.fluid import compiler, Program, program_guard, core
+from paddle.fluid import Program, core, program_guard
 import gradient_checker
 from decorator_helper import prog_scope
 import paddle.fluid.layers as layers
diff --git a/python/paddle/fluid/tests/unittests/test_top_k_op.py b/python/paddle/fluid/tests/unittests/test_top_k_op.py
index 825f22f262..a4e54af05b 100644
--- a/python/paddle/fluid/tests/unittests/test_top_k_op.py
+++ b/python/paddle/fluid/tests/unittests/test_top_k_op.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 from op_test import OpTest
-import paddle.fluid.core as core
 import paddle
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_top_k_v2_op.py b/python/paddle/fluid/tests/unittests/test_top_k_v2_op.py
index 6b59a5d359..c6254801b6 100644
--- a/python/paddle/fluid/tests/unittests/test_top_k_v2_op.py
+++ b/python/paddle/fluid/tests/unittests/test_top_k_v2_op.py
@@ -17,7 +17,6 @@ import numpy as np
 from op_test import OpTest
 import paddle
 import paddle.fluid.core as core
-from paddle.fluid.framework import _test_eager_guard
 
 
 def numpy_topk(x, k=1, axis=-1, largest=True):
diff --git a/python/paddle/fluid/tests/unittests/test_trace_op.py b/python/paddle/fluid/tests/unittests/test_trace_op.py
index ead4f48c4d..83aca5654c 100644
--- a/python/paddle/fluid/tests/unittests/test_trace_op.py
+++ b/python/paddle/fluid/tests/unittests/test_trace_op.py
@@ -15,7 +15,6 @@
 import unittest
 import numpy as np
 from op_test import OpTest
-import paddle.nn.functional as F
 import paddle.fluid as fluid
 import paddle.fluid.core as core
 import paddle.tensor as tensor
diff --git a/python/paddle/fluid/tests/unittests/test_trainer_desc.py b/python/paddle/fluid/tests/unittests/test_trainer_desc.py
index 692433704d..390a650fd1 100644
--- a/python/paddle/fluid/tests/unittests/test_trainer_desc.py
+++ b/python/paddle/fluid/tests/unittests/test_trainer_desc.py
@@ -17,9 +17,6 @@ including config, etc.
 """
 
 import paddle.fluid as fluid
-import numpy as np
-import os
-import shutil
 import unittest
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_transfer_dtype_op.py b/python/paddle/fluid/tests/unittests/test_transfer_dtype_op.py
index 42af287694..9d3edc0e06 100644
--- a/python/paddle/fluid/tests/unittests/test_transfer_dtype_op.py
+++ b/python/paddle/fluid/tests/unittests/test_transfer_dtype_op.py
@@ -17,7 +17,6 @@ import numpy as np
 
 import paddle
 import paddle.fluid.core as core
-import paddle.fluid as fluid
 from op_test import OpTest, convert_uint16_to_float, convert_float_to_uint16
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_tril_indices_op.py b/python/paddle/fluid/tests/unittests/test_tril_indices_op.py
index 6ab5479ef9..fae0221240 100644
--- a/python/paddle/fluid/tests/unittests/test_tril_indices_op.py
+++ b/python/paddle/fluid/tests/unittests/test_tril_indices_op.py
@@ -17,7 +17,6 @@ import numpy as np
 from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
-from paddle.fluid import Program, program_guard
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_triu_indices_op.py b/python/paddle/fluid/tests/unittests/test_triu_indices_op.py
index 36ee733376..6863517874 100644
--- a/python/paddle/fluid/tests/unittests/test_triu_indices_op.py
+++ b/python/paddle/fluid/tests/unittests/test_triu_indices_op.py
@@ -17,7 +17,6 @@ import numpy as np
 from op_test import OpTest
 import paddle
 import paddle.fluid as fluid
-from paddle.fluid import Program, program_guard
 from paddle.fluid.framework import _test_eager_guard
 
 
diff --git a/python/paddle/fluid/tests/unittests/test_trunc_op.py b/python/paddle/fluid/tests/unittests/test_trunc_op.py
index f035d292cd..0a410e5380 100644
--- a/python/paddle/fluid/tests/unittests/test_trunc_op.py
+++ b/python/paddle/fluid/tests/unittests/test_trunc_op.py
@@ -16,9 +16,6 @@ import unittest
 import numpy as np
 from op_test import OpTest
 import paddle
-import paddle.fluid.core as core
-import paddle.fluid as fluid
-from paddle.fluid import Program, program_guard
 from paddle.fluid.framework import _test_eager_guard
 
 paddle.enable_static()
diff --git a/python/paddle/fluid/tests/unittests/test_truncated_gaussian_random_op.py b/python/paddle/fluid/tests/unittests/test_truncated_gaussian_random_op.py
index 285a521d1d..780caa7433 100644
--- a/python/paddle/fluid/tests/unittests/test_truncated_gaussian_random_op.py
+++ b/python/paddle/fluid/tests/unittests/test_truncated_gaussian_random_op.py
@@ -18,8 +18,6 @@ import numpy
 import paddle
 import paddle.fluid as fluid
 import paddle.fluid.core as core
-from op_test import OpTest
-from paddle.fluid.op import Operator
 from paddle.fluid.executor import Executor
 from paddle.fluid.framework import _test_eager_guard
 
-- 
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