diff --git a/python/paddle/dataset/cifar.py b/python/paddle/dataset/cifar.py
index a6b6e28c0f5a352dbfa39f186de73cc70736b835..e3d239e2cdf456d792a5bf373eee732b4542871b 100644
--- a/python/paddle/dataset/cifar.py
+++ b/python/paddle/dataset/cifar.py
@@ -37,6 +37,8 @@ import tarfile
 import six
 from six.moves import cPickle as pickle
 
+__all__ = []
+
 URL_PREFIX = 'https://dataset.bj.bcebos.com/cifar/'
 CIFAR10_URL = URL_PREFIX + 'cifar-10-python.tar.gz'
 CIFAR10_MD5 = 'c58f30108f718f92721af3b95e74349a'
diff --git a/python/paddle/dataset/common.py b/python/paddle/dataset/common.py
index cff0c6257387c21d04a019eaf6d61db5790bf476..2a476f63862cfa2a41853d129bd6764df5292d3f 100644
--- a/python/paddle/dataset/common.py
+++ b/python/paddle/dataset/common.py
@@ -26,6 +26,8 @@ import paddle.dataset
 import six.moves.cPickle as pickle
 import glob
 
+__all__ = []
+
 HOME = os.path.expanduser('~')
 DATA_HOME = os.path.join(HOME, '.cache', 'paddle', 'dataset')
 
diff --git a/python/paddle/dataset/conll05.py b/python/paddle/dataset/conll05.py
index 96fd5ae7d76c81e5a531efc7d5f99417abf2d0f4..65cf04f05b7f04e3d750cb43bb83653067820fbe 100644
--- a/python/paddle/dataset/conll05.py
+++ b/python/paddle/dataset/conll05.py
@@ -30,6 +30,8 @@ import paddle.compat as cpt
 import paddle.utils.deprecated as deprecated
 from six.moves import zip, range
 
+__all__ = []
+
 DATA_URL = 'http://paddlemodels.bj.bcebos.com/conll05st/conll05st-tests.tar.gz'
 DATA_MD5 = '387719152ae52d60422c016e92a742fc'
 WORDDICT_URL = 'http://paddlemodels.bj.bcebos.com/conll05st%2FwordDict.txt'
diff --git a/python/paddle/dataset/flowers.py b/python/paddle/dataset/flowers.py
index 67ffd8e1ee1edaab2539591603cef3f774a42c50..3b437a1f0744076736987e42865e07921c316559 100644
--- a/python/paddle/dataset/flowers.py
+++ b/python/paddle/dataset/flowers.py
@@ -51,6 +51,8 @@ import six
 from six.moves import cPickle as pickle
 from paddle.utils import try_import
 
+__all__ = []
+
 DATA_URL = 'http://paddlemodels.bj.bcebos.com/flowers/102flowers.tgz'
 LABEL_URL = 'http://paddlemodels.bj.bcebos.com/flowers/imagelabels.mat'
 SETID_URL = 'http://paddlemodels.bj.bcebos.com/flowers/setid.mat'
diff --git a/python/paddle/dataset/image.py b/python/paddle/dataset/image.py
index 31329cd978cb59c8cfcf5c6038839c3b9bca904e..c20672c2ce1577a2f992c682710a6e61da947b45 100644
--- a/python/paddle/dataset/image.py
+++ b/python/paddle/dataset/image.py
@@ -58,6 +58,8 @@ import os
 import tarfile
 import six.moves.cPickle as pickle
 
+__all__ = []
+
 
 def _check_cv2():
     if cv2 is None:
diff --git a/python/paddle/dataset/imdb.py b/python/paddle/dataset/imdb.py
index 33ae4405c502b3a7f8998820b038f5beb0819830..9a6c8e837ed461125bcda8883d007e8cb2716238 100644
--- a/python/paddle/dataset/imdb.py
+++ b/python/paddle/dataset/imdb.py
@@ -30,6 +30,8 @@ import re
 import string
 import six
 
+__all__ = []
+
 #URL = 'http://ai.stanford.edu/%7Eamaas/data/sentiment/aclImdb_v1.tar.gz'
 URL = 'https://dataset.bj.bcebos.com/imdb%2FaclImdb_v1.tar.gz'
 MD5 = '7c2ac02c03563afcf9b574c7e56c153a'
diff --git a/python/paddle/dataset/imikolov.py b/python/paddle/dataset/imikolov.py
index 3b8b12303c9493716984f7c2a974315b41eb13b5..7a4efe27aa9614ea6d4bf919c4a6925ec288f17f 100644
--- a/python/paddle/dataset/imikolov.py
+++ b/python/paddle/dataset/imikolov.py
@@ -27,6 +27,8 @@ import collections
 import tarfile
 import six
 
+__all__ = []
+
 #URL = 'http://www.fit.vutbr.cz/~imikolov/rnnlm/simple-examples.tgz'
 URL = 'https://dataset.bj.bcebos.com/imikolov%2Fsimple-examples.tgz'
 MD5 = '30177ea32e27c525793142b6bf2c8e2d'
diff --git a/python/paddle/dataset/mnist.py b/python/paddle/dataset/mnist.py
index 06e8174a61e803fe0fed067aad5556726837839a..e4f724bd66d13c6ba3dcdd8afb3bb2103fb178c8 100644
--- a/python/paddle/dataset/mnist.py
+++ b/python/paddle/dataset/mnist.py
@@ -27,6 +27,8 @@ import numpy
 import struct
 from six.moves import range
 
+__all__ = []
+
 URL_PREFIX = 'https://dataset.bj.bcebos.com/mnist/'
 TEST_IMAGE_URL = URL_PREFIX + 't10k-images-idx3-ubyte.gz'
 TEST_IMAGE_MD5 = '9fb629c4189551a2d022fa330f9573f3'
diff --git a/python/paddle/dataset/movielens.py b/python/paddle/dataset/movielens.py
index 23781b65785b10779de8ef56eadf5f27d74a5f19..862ac586bc964319e3f27f9ea0f94ef04d072cd6 100644
--- a/python/paddle/dataset/movielens.py
+++ b/python/paddle/dataset/movielens.py
@@ -34,6 +34,8 @@ import functools
 import six
 import paddle.compat as cpt
 
+__all__ = []
+
 age_table = [1, 18, 25, 35, 45, 50, 56]
 
 #URL = 'http://files.grouplens.org/datasets/movielens/ml-1m.zip'
diff --git a/python/paddle/dataset/tests/cifar_test.py b/python/paddle/dataset/tests/cifar_test.py
index 8e514f0fd9a18a7d512430111a8a11b942950d20..54dff6b40cf3c19bfbb1c8a6a1d6425c452e6746 100644
--- a/python/paddle/dataset/tests/cifar_test.py
+++ b/python/paddle/dataset/tests/cifar_test.py
@@ -17,6 +17,8 @@ from __future__ import print_function
 import paddle.dataset.cifar
 import unittest
 
+__all__ = []
+
 
 class TestCIFAR(unittest.TestCase):
     def check_reader(self, reader):
diff --git a/python/paddle/dataset/tests/flowers_test.py b/python/paddle/dataset/tests/flowers_test.py
index 06a0a7761cfa10ca3211297d176e3e909332e271..256c116b7cff65b6eae08b244db9737e2db38cfa 100644
--- a/python/paddle/dataset/tests/flowers_test.py
+++ b/python/paddle/dataset/tests/flowers_test.py
@@ -17,6 +17,8 @@ from __future__ import print_function
 import paddle.dataset.flowers
 import unittest
 
+__all__ = []
+
 
 class TestFlowers(unittest.TestCase):
     def check_reader(self, reader):
diff --git a/python/paddle/dataset/tests/imdb_test.py b/python/paddle/dataset/tests/imdb_test.py
index 613c5f8edb289ce5d9110adbedbe44d058eaf75d..264b0f232fa803aa8f7da33b1d1782b0973bcef1 100644
--- a/python/paddle/dataset/tests/imdb_test.py
+++ b/python/paddle/dataset/tests/imdb_test.py
@@ -18,6 +18,8 @@ import paddle.dataset.imdb
 import unittest
 import re
 
+__all__ = []
+
 TRAIN_POS_PATTERN = re.compile(r"aclImdb/train/pos/.*\.txt$")
 TRAIN_NEG_PATTERN = re.compile(r"aclImdb/train/neg/.*\.txt$")
 TRAIN_PATTERN = re.compile(r"aclImdb/train/.*\.txt$")
diff --git a/python/paddle/dataset/tests/imikolov_test.py b/python/paddle/dataset/tests/imikolov_test.py
index 1f78a5dd4d1a09c3192bc8c144c5a78c8a214f3a..5556274211fc3334aa12a6c9b3d3926a5832a1e7 100644
--- a/python/paddle/dataset/tests/imikolov_test.py
+++ b/python/paddle/dataset/tests/imikolov_test.py
@@ -19,6 +19,8 @@ import unittest
 
 WORD_DICT = paddle.dataset.imikolov.build_dict()
 
+__all__ = []
+
 
 class TestMikolov(unittest.TestCase):
     def check_reader(self, reader, n):
diff --git a/python/paddle/dataset/tests/mnist_test.py b/python/paddle/dataset/tests/mnist_test.py
index fbb5d926494e38283e78ec15381530e50f32915d..238b58244e147a30f47a0a54451c506142e57185 100644
--- a/python/paddle/dataset/tests/mnist_test.py
+++ b/python/paddle/dataset/tests/mnist_test.py
@@ -17,6 +17,8 @@ from __future__ import print_function
 import paddle.dataset.mnist
 import unittest
 
+__all__ = []
+
 
 class TestMNIST(unittest.TestCase):
     def check_reader(self, reader):
diff --git a/python/paddle/dataset/tests/test_image.py b/python/paddle/dataset/tests/test_image.py
index 32d2eb17ae673e72bbee2fc3bb5e3b05f1b20074..259939d62f641359f3953c75c2d1015bcdd8edb3 100644
--- a/python/paddle/dataset/tests/test_image.py
+++ b/python/paddle/dataset/tests/test_image.py
@@ -19,6 +19,8 @@ import numpy as np
 
 import paddle.dataset.image as image
 
+__all__ = []
+
 
 class Image(unittest.TestCase):
     def test_resize_flip_chw(self):
diff --git a/python/paddle/dataset/tests/voc2012_test.py b/python/paddle/dataset/tests/voc2012_test.py
index cddeb91cab2c0f90567f28f8258156e2bb654abc..21c24e6df823fbe0facab4e97cc255ea2745c64e 100644
--- a/python/paddle/dataset/tests/voc2012_test.py
+++ b/python/paddle/dataset/tests/voc2012_test.py
@@ -17,6 +17,8 @@ from __future__ import print_function
 import paddle.dataset.voc2012
 import unittest
 
+__all__ = []
+
 
 class TestVOC(unittest.TestCase):
     def check_reader(self, reader):
diff --git a/python/paddle/dataset/tests/wmt16_test.py b/python/paddle/dataset/tests/wmt16_test.py
index be121bb10121967590c9e136e9a1964a133e934b..68a9819c8f335002134129668c33991cb8bffc76 100644
--- a/python/paddle/dataset/tests/wmt16_test.py
+++ b/python/paddle/dataset/tests/wmt16_test.py
@@ -17,6 +17,8 @@ from __future__ import print_function
 import paddle.dataset.wmt16
 import unittest
 
+__all__ = []
+
 
 class TestWMT16(unittest.TestCase):
     def checkout_one_sample(self, sample):
diff --git a/python/paddle/dataset/uci_housing.py b/python/paddle/dataset/uci_housing.py
index 1bc2098350f5339234ec43b7a962ef118ea9df2e..0ac65f0fda46b88be1149596d4e6f4f6813667a3 100644
--- a/python/paddle/dataset/uci_housing.py
+++ b/python/paddle/dataset/uci_housing.py
@@ -29,6 +29,8 @@ import os
 import paddle.dataset.common
 import paddle.utils.deprecated as deprecated
 
+__all__ = []
+
 URL = 'http://paddlemodels.bj.bcebos.com/uci_housing/housing.data'
 MD5 = 'd4accdce7a25600298819f8e28e8d593'
 feature_names = [
diff --git a/python/paddle/dataset/voc2012.py b/python/paddle/dataset/voc2012.py
index 1575b44cd1677e3a28ad7c3d3fa36f9c95b223f3..5784e739b418e1ad45eea3950b233ea5911c495b 100644
--- a/python/paddle/dataset/voc2012.py
+++ b/python/paddle/dataset/voc2012.py
@@ -25,10 +25,11 @@ import tarfile
 import io
 import numpy as np
 from paddle.dataset.common import download
-from paddle.dataset.image import *
 import paddle.utils.deprecated as deprecated
 from PIL import Image
 
+__all__ = []
+
 VOC_URL = 'http://host.robots.ox.ac.uk/pascal/VOC/voc2012/\
 VOCtrainval_11-May-2012.tar'
 
diff --git a/python/paddle/dataset/wmt14.py b/python/paddle/dataset/wmt14.py
index 818f4b28ba143f99637a061563630a584e9a2521..c842ceaa09133320ca8d6404220175e6b4a28c68 100644
--- a/python/paddle/dataset/wmt14.py
+++ b/python/paddle/dataset/wmt14.py
@@ -30,6 +30,8 @@ import paddle.dataset.common
 import paddle.compat as cpt
 import paddle.utils.deprecated as deprecated
 
+__all__ = []
+
 URL_DEV_TEST = ('http://www-lium.univ-lemans.fr/~schwenk/'
                 'cslm_joint_paper/data/dev+test.tgz')
 MD5_DEV_TEST = '7d7897317ddd8ba0ae5c5fa7248d3ff5'
diff --git a/python/paddle/dataset/wmt16.py b/python/paddle/dataset/wmt16.py
index 6804e7ab5fc33b0f15614e214c809c3e0cb2f54f..320ef139f7700cf37d1f4c4e1b6c765e4f674d14 100644
--- a/python/paddle/dataset/wmt16.py
+++ b/python/paddle/dataset/wmt16.py
@@ -40,6 +40,8 @@ import paddle
 import paddle.compat as cpt
 import paddle.utils.deprecated as deprecated
 
+__all__ = []
+
 DATA_URL = ("http://paddlemodels.bj.bcebos.com/wmt/wmt16.tar.gz")
 DATA_MD5 = "0c38be43600334966403524a40dcd81e"
 
diff --git a/python/paddle/framework/__init__.py b/python/paddle/framework/__init__.py
index 660267c24e57eec082d96170b407943f7b69ac14..ce84fb739c0009c62bfd2c9c9d9fd74255c96312 100644
--- a/python/paddle/framework/__init__.py
+++ b/python/paddle/framework/__init__.py
@@ -34,3 +34,5 @@ from ..fluid.dygraph.base import grad  # noqa: F401
 from .io import save  # noqa: F401
 from .io import load  # noqa: F401
 from ..fluid.dygraph.parallel import DataParallel  # noqa: F401
+
+__all__ = []
diff --git a/python/paddle/framework/dtype.py b/python/paddle/framework/dtype.py
index 3eeaa6e74ecebd0e76ea11564bbb4060f101c453..f49f748975882daa30db5432b5893b86b963075b 100644
--- a/python/paddle/framework/dtype.py
+++ b/python/paddle/framework/dtype.py
@@ -12,11 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__all__ = [
-    "dtype", "uint8", "int8", "int16", "int32", "int64", "bfloat16", "float16",
-    "float32", "float64", "complex64", "complex128", "bool"
-]
-
 from ..fluid.core import VarDesc
 
 dtype = VarDesc.VarType
@@ -38,3 +33,5 @@ complex64 = VarDesc.VarType.COMPLEX64
 complex128 = VarDesc.VarType.COMPLEX128
 
 bool = VarDesc.VarType.BOOL
+
+__all__ = []
diff --git a/python/paddle/framework/framework.py b/python/paddle/framework/framework.py
index f50285010cc5de9cd86721c224332fab983490a4..17eaa82cd8b6a049ce99396fe0aaf2ab0476a182 100644
--- a/python/paddle/framework/framework.py
+++ b/python/paddle/framework/framework.py
@@ -19,6 +19,8 @@ from paddle.fluid.framework import _dygraph_tracer
 import numpy as np
 from contextlib import contextmanager
 
+__all__ = []
+
 
 def set_default_dtype(d):
     """
diff --git a/python/paddle/framework/io.py b/python/paddle/framework/io.py
index ac0e172d49d541ee21b3cfe68d5ca56ff49a44e7..493574c5bef47a50c633a95488d33fdd7b7dd29d 100644
--- a/python/paddle/framework/io.py
+++ b/python/paddle/framework/io.py
@@ -38,6 +38,8 @@ from paddle.fluid.dygraph.jit import _SaveLoadConfig
 from paddle.fluid.dygraph.io import _construct_program_holders, _construct_params_and_buffers
 from paddle.fluid.dygraph.io import INFER_MODEL_SUFFIX, INFER_PARAMS_SUFFIX, INFER_PARAMS_INFO_SUFFIX
 
+__all__ = []
+
 
 def _build_saved_state_dict(state_dict):
     save_dict = {}
diff --git a/python/paddle/framework/random.py b/python/paddle/framework/random.py
index 251a8407035fdcdcb133ef9e14cf2f937e3603c0..701f8b5352c3d41337dde1463e37085aeeb21178 100644
--- a/python/paddle/framework/random.py
+++ b/python/paddle/framework/random.py
@@ -16,6 +16,8 @@
 import paddle.fluid as fluid
 from paddle.fluid import core
 
+__all__ = []
+
 
 def seed(seed):
     """
diff --git a/python/paddle/nn/clip.py b/python/paddle/nn/clip.py
index 70c49b4a53876db5705d63c3df501fbd374f0a29..e868cbdbacc171531c31cff671b8cfb7b73f0c93 100644
--- a/python/paddle/nn/clip.py
+++ b/python/paddle/nn/clip.py
@@ -16,3 +16,5 @@
 from ..fluid.clip import ClipGradByGlobalNorm  # noqa: F401
 from ..fluid.clip import ClipGradByNorm  # noqa: F401
 from ..fluid.clip import ClipGradByValue  # noqa: F401
+
+__all__ = []
diff --git a/python/paddle/nn/decode.py b/python/paddle/nn/decode.py
index 3229f0b21a6699d1b7437955af31004538a791c9..ff4a6e4f482af5958c76079c9987cc20e5ea935d 100644
--- a/python/paddle/nn/decode.py
+++ b/python/paddle/nn/decode.py
@@ -14,3 +14,5 @@
 
 from ..fluid.layers import BeamSearchDecoder  # noqa: F401
 from ..fluid.layers import dynamic_decode  # noqa: F401
+
+__all__ = []
diff --git a/python/paddle/nn/functional/activation.py b/python/paddle/nn/functional/activation.py
index cd8ee99baa23742b0c7c1ad5f20c7ce17e339790..9001ba16b7ac2d076964ed7f6620a7897258ecf5 100644
--- a/python/paddle/nn/functional/activation.py
+++ b/python/paddle/nn/functional/activation.py
@@ -27,6 +27,8 @@ from ...fluid import core
 from ...fluid.data_feeder import check_variable_and_dtype, check_dtype
 import paddle
 
+__all__ = []
+
 
 def elu(x, alpha=1.0, name=None):
     r"""
diff --git a/python/paddle/nn/functional/common.py b/python/paddle/nn/functional/common.py
index 7379c7a5f67bd0a0a5661f5da41c46dca3bb16fb..65b9c6771c4f190e74b5228d5233d504d5b3fc09 100644
--- a/python/paddle/nn/functional/common.py
+++ b/python/paddle/nn/functional/common.py
@@ -34,6 +34,8 @@ from ...fluid import core, dygraph_utils
 from ...fluid import core, layers
 from ...fluid.data_feeder import check_variable_and_dtype
 
+__all__ = []
+
 
 def interpolate(x,
                 size=None,
diff --git a/python/paddle/nn/functional/conv.py b/python/paddle/nn/functional/conv.py
index 800c8204973723be905599b35d63d993bebbba94..1edbc5f462ecd7b49270b74434604b700e5079d8 100644
--- a/python/paddle/nn/functional/conv.py
+++ b/python/paddle/nn/functional/conv.py
@@ -22,6 +22,8 @@ from ...fluid.data_feeder import check_variable_and_dtype
 from ...fluid.param_attr import ParamAttr
 from ...fluid.layer_helper import LayerHelper
 
+__all__ = []
+
 
 def _is_list_or_tuple(input):
     return isinstance(input, (list, tuple))
diff --git a/python/paddle/nn/functional/extension.py b/python/paddle/nn/functional/extension.py
index 7900f903e7fd2f5bc298d18b28fd602f309238e9..8a9597119ab8df98a7e192a376193691061ec7e4 100644
--- a/python/paddle/nn/functional/extension.py
+++ b/python/paddle/nn/functional/extension.py
@@ -23,6 +23,8 @@ from ...fluid import core, dygraph_utils
 from ...fluid.layers.layer_function_generator import templatedoc
 from ...fluid.layers.sequence_lod import sequence_mask
 
+__all__ = []
+
 
 def diag_embed(input, offset=0, dim1=-2, dim2=-1):
     """
diff --git a/python/paddle/nn/functional/input.py b/python/paddle/nn/functional/input.py
index 4fff9cda4be33abd5db3384837efc84c7a1063a7..67dc69c1a93b692c6652bfb220a4c547a14b71a9 100644
--- a/python/paddle/nn/functional/input.py
+++ b/python/paddle/nn/functional/input.py
@@ -19,6 +19,8 @@ from ...fluid.layer_helper import LayerHelper
 from ...fluid.layers import core
 from ...fluid.data_feeder import check_variable_and_dtype, check_dtype
 
+__all__ = []
+
 
 def one_hot(x, num_classes, name=None):
     """
diff --git a/python/paddle/nn/functional/loss.py b/python/paddle/nn/functional/loss.py
index bb2d8005f4e3186d0531ca2516e07d169f76afc5..31ffb91f30dca992daba57d8d9172e0531346191 100755
--- a/python/paddle/nn/functional/loss.py
+++ b/python/paddle/nn/functional/loss.py
@@ -39,6 +39,8 @@ from ...fluid.framework import _varbase_creator
 from ...fluid.framework import Variable
 from paddle.utils import deprecated
 
+__all__ = []
+
 
 def binary_cross_entropy(input, label, weight=None, reduction='mean',
                          name=None):
diff --git a/python/paddle/nn/functional/norm.py b/python/paddle/nn/functional/norm.py
index dddc4c66d591ccbe86722492a571fd7d65570559..20e3254638997c99dbb1dd1d44875707d4004167 100644
--- a/python/paddle/nn/functional/norm.py
+++ b/python/paddle/nn/functional/norm.py
@@ -24,6 +24,8 @@ from ...fluid.param_attr import ParamAttr
 from ...fluid import core, dygraph_utils
 import numbers
 
+__all__ = []
+
 
 def normalize(x, p=2, axis=1, epsilon=1e-12, name=None):
     r"""
diff --git a/python/paddle/nn/functional/pooling.py b/python/paddle/nn/functional/pooling.py
index 27a66c629cafaa283346b07750392710d525a32c..1869ac15b17a3bdedb27605e377753198a6fdca0 100755
--- a/python/paddle/nn/functional/pooling.py
+++ b/python/paddle/nn/functional/pooling.py
@@ -18,6 +18,8 @@ from ...fluid.framework import in_dygraph_mode
 from ...fluid.layers import utils, LayerHelper, unsqueeze, squeeze
 from ...fluid.data_feeder import check_type, check_variable_and_dtype
 
+__all__ = []
+
 
 def _is_list_or_tuple(input):
     return isinstance(input, (list, tuple))
diff --git a/python/paddle/nn/functional/vision.py b/python/paddle/nn/functional/vision.py
index cb8a817023d22c243349f564bb2bd13f072da957..55a66e70160b6cc73b777b3bf3ef8c903006297c 100644
--- a/python/paddle/nn/functional/vision.py
+++ b/python/paddle/nn/functional/vision.py
@@ -19,6 +19,8 @@ from ...fluid.data_feeder import check_variable_and_dtype
 from ...fluid import dygraph_utils
 import numpy as np
 
+__all__ = []
+
 
 def affine_grid(theta, out_shape, align_corners=True, name=None):
     """
diff --git a/python/paddle/nn/initializer/assign.py b/python/paddle/nn/initializer/assign.py
index 642919f3540753f499190a16637ae67836f36d9b..13a70a179ffe38e2f2ef4b335657d7e45d1bb84a 100644
--- a/python/paddle/nn/initializer/assign.py
+++ b/python/paddle/nn/initializer/assign.py
@@ -19,6 +19,8 @@ from ...fluid.core import VarDesc
 from ...fluid.data_feeder import check_type
 from ...fluid.initializer import NumpyArrayInitializer
 
+__all__ = []
+
 
 class Assign(NumpyArrayInitializer):
     """Init an parameter with a numpy array, list, or tensor.
diff --git a/python/paddle/nn/initializer/constant.py b/python/paddle/nn/initializer/constant.py
index aec3e82aab62b7591d93b83fea137147672f820c..292eaff362b40773fb2980174b146cb506d54a9a 100644
--- a/python/paddle/nn/initializer/constant.py
+++ b/python/paddle/nn/initializer/constant.py
@@ -15,6 +15,8 @@
 # TODO: define the initializers of Constant in neural network
 from ...fluid.initializer import ConstantInitializer
 
+__all__ = []
+
 
 class Constant(ConstantInitializer):
     """Implement the constant initializer.
diff --git a/python/paddle/nn/initializer/kaiming.py b/python/paddle/nn/initializer/kaiming.py
index 712bffccda102fc5ca1edaf85c641850027a4f01..f0847c85237b2523b74c8a3323550a56233ac6f7 100644
--- a/python/paddle/nn/initializer/kaiming.py
+++ b/python/paddle/nn/initializer/kaiming.py
@@ -15,6 +15,8 @@
 # TODO: define the initializers of Kaiming functions in neural network
 from ...fluid.initializer import MSRAInitializer
 
+__all__ = []
+
 
 class KaimingNormal(MSRAInitializer):
     r"""Implements the Kaiming Normal initializer
diff --git a/python/paddle/nn/initializer/normal.py b/python/paddle/nn/initializer/normal.py
index c009df780054ed9b727479d4029d002a3b1a521a..6fee5058057cb0f332a38350958c48d235459398 100644
--- a/python/paddle/nn/initializer/normal.py
+++ b/python/paddle/nn/initializer/normal.py
@@ -15,6 +15,8 @@
 from ...fluid.initializer import NormalInitializer
 from ...fluid.initializer import TruncatedNormalInitializer
 
+__all__ = []
+
 
 class Normal(NormalInitializer):
     """The Random Normal (Gaussian) distribution initializer.
diff --git a/python/paddle/nn/initializer/uniform.py b/python/paddle/nn/initializer/uniform.py
index e54a4d2187b8d7742ab2a877a9faee97abc33d72..cac03b59480712db3a1fb8b826958bf513277eb5 100644
--- a/python/paddle/nn/initializer/uniform.py
+++ b/python/paddle/nn/initializer/uniform.py
@@ -14,6 +14,8 @@
 
 from ...fluid.initializer import UniformInitializer
 
+__all__ = []
+
 
 class Uniform(UniformInitializer):
     """The random uniform distribution initializer.
diff --git a/python/paddle/nn/initializer/xavier.py b/python/paddle/nn/initializer/xavier.py
index 01a4a8887b489ab3492603d365da09ae5eb7ca22..f2d5593032f64d0759515c733c733406fb14bd59 100644
--- a/python/paddle/nn/initializer/xavier.py
+++ b/python/paddle/nn/initializer/xavier.py
@@ -14,6 +14,8 @@
 
 from ...fluid.initializer import XavierInitializer
 
+__all__ = []
+
 
 class XavierNormal(XavierInitializer):
     r"""
diff --git a/python/paddle/nn/layer/__init__.py b/python/paddle/nn/layer/__init__.py
index 64f0391fb6533e817f48a5cd9c626751856c58f6..10c2b1e3056f15e2df3141ec2c1e7387eae3048d 100644
--- a/python/paddle/nn/layer/__init__.py
+++ b/python/paddle/nn/layer/__init__.py
@@ -81,3 +81,5 @@ from .norm import LocalResponseNorm  # noqa: F401
 from .vision import PixelShuffle  # noqa: F401
 from .distance import PairwiseDistance  # noqa: F401
 from .container import LayerDict  # noqa: F401
+
+__all__ = []
diff --git a/python/paddle/nn/layer/activation.py b/python/paddle/nn/layer/activation.py
index c6ce4588ea5dab1f8095b9db83d6fb0b4d503ebe..d5b37144cfffed55396787cc7745ea7b80639672 100644
--- a/python/paddle/nn/layer/activation.py
+++ b/python/paddle/nn/layer/activation.py
@@ -22,6 +22,8 @@ from ...fluid.initializer import Constant
 from paddle.framework import get_default_dtype
 from .. import functional as F
 
+__all__ = []
+
 
 class ELU(layers.Layer):
     r"""
diff --git a/python/paddle/nn/layer/common.py b/python/paddle/nn/layer/common.py
index 058507ba5dec36ac6dba964e662e5176418b18ed..f608f20feef55ef526884eb10eff44cdcdae93ec 100644
--- a/python/paddle/nn/layer/common.py
+++ b/python/paddle/nn/layer/common.py
@@ -20,6 +20,8 @@ from ...fluid.framework import in_dygraph_mode
 from .. import functional as F
 from ...fluid.framework import _dygraph_tracer
 
+__all__ = []
+
 
 def _npairs(x, n):
     if isinstance(x, (paddle.Tensor, list)):
diff --git a/python/paddle/nn/layer/container.py b/python/paddle/nn/layer/container.py
index db317839ae818ac4f9bf87719dd84240b9a4916d..ad41535f44ad6a76c9b4cfbfad8644e9a8c85578 100644
--- a/python/paddle/nn/layer/container.py
+++ b/python/paddle/nn/layer/container.py
@@ -16,7 +16,7 @@ from collections import OrderedDict
 from ...fluid.dygraph.layers import Layer
 from six.moves import collections_abc
 
-__all__ = ['LayerDict', ]
+__all__ = []
 
 
 class LayerDict(Layer):
diff --git a/python/paddle/nn/layer/conv.py b/python/paddle/nn/layer/conv.py
index 2360dc17cf17108f7bbb1b1620632002842a8269..2de065d62a4f8ce75dd079b762d5b899bcbd4d26 100644
--- a/python/paddle/nn/layer/conv.py
+++ b/python/paddle/nn/layer/conv.py
@@ -25,6 +25,8 @@ from .. import functional as F
 from ...fluid.layers import utils
 from ..functional.conv import _update_padding_nd
 
+__all__ = []
+
 
 def _get_default_param_initializer(num_channels, filter_size):
     filter_elem_num = num_channels * np.prod(filter_size)
diff --git a/python/paddle/nn/layer/distance.py b/python/paddle/nn/layer/distance.py
index 7eb0fc1fbb5755dbbc4f77493d2affb7247e61b7..77e3447ffda00e29567369fa1611221178746f26 100644
--- a/python/paddle/nn/layer/distance.py
+++ b/python/paddle/nn/layer/distance.py
@@ -20,6 +20,8 @@ from ...fluid.framework import core, in_dygraph_mode
 from ...fluid.data_feeder import check_variable_and_dtype, check_type
 from ...fluid.layer_helper import LayerHelper
 
+__all__ = []
+
 
 class PairwiseDistance(layers.Layer):
     r"""
diff --git a/python/paddle/nn/layer/loss.py b/python/paddle/nn/layer/loss.py
index 356b22c632cf5199319e3d46ba764f04833632c3..8f43eb8866b4bb7e6d1738999b7f64335fa62185 100644
--- a/python/paddle/nn/layer/loss.py
+++ b/python/paddle/nn/layer/loss.py
@@ -21,6 +21,8 @@ import paddle
 from .. import functional as F
 from paddle.fluid.framework import core, in_dygraph_mode, _varbase_creator
 
+__all__ = []
+
 
 class BCEWithLogitsLoss(fluid.dygraph.Layer):
     r"""
diff --git a/python/paddle/nn/layer/norm.py b/python/paddle/nn/layer/norm.py
index 970d68e8263432105349e9dfc699d0a0b2ea1115..45640a6598e576c1264ed47f9a1e0a540d2d6abe 100644
--- a/python/paddle/nn/layer/norm.py
+++ b/python/paddle/nn/layer/norm.py
@@ -50,6 +50,8 @@ import warnings
 from ...fluid.dygraph.base import no_grad
 from .. import functional as F
 
+__all__ = []
+
 
 class _InstanceNormBase(layers.Layer):
     """
diff --git a/python/paddle/nn/layer/pooling.py b/python/paddle/nn/layer/pooling.py
index 5916fd7c69eb0be56dbeef2feaa6d4f8bb969b15..528572ee21b7cc0859c0488bc791239418a4c9f8 100755
--- a/python/paddle/nn/layer/pooling.py
+++ b/python/paddle/nn/layer/pooling.py
@@ -16,6 +16,8 @@ from ...fluid.dygraph import layers
 from ...fluid.layer_helper import LayerHelper
 from .. import functional as F
 
+__all__ = []
+
 
 class AvgPool1D(layers.Layer):
     r"""
diff --git a/python/paddle/nn/layer/rnn.py b/python/paddle/nn/layer/rnn.py
index a7539b5b09571c843247e1fce61d170aa71d91a0..de9b8cdbfce2a1814066c32ccefc8d30e1da851c 100644
--- a/python/paddle/nn/layer/rnn.py
+++ b/python/paddle/nn/layer/rnn.py
@@ -33,6 +33,8 @@ from paddle.fluid.layers import utils
 from paddle.fluid.layers.utils import map_structure, flatten, pack_sequence_as
 from paddle.fluid.data_feeder import convert_dtype
 
+__all__ = []
+
 
 def split_states(states, bidirectional=False, state_components=1):
     r"""
diff --git a/python/paddle/nn/layer/transformer.py b/python/paddle/nn/layer/transformer.py
index 752870f3d0a28bd0e8db29138f6a5a901076515b..891177532a438993a0291ef99d548af04a651ff6 100644
--- a/python/paddle/nn/layer/transformer.py
+++ b/python/paddle/nn/layer/transformer.py
@@ -28,6 +28,8 @@ from ...fluid.dygraph import Layer, LayerList
 from ...fluid.param_attr import ParamAttr
 from ...fluid.data_feeder import convert_dtype
 
+__all__ = []
+
 
 def _convert_param_attr_to_list(param_attr, n):
     """
diff --git a/python/paddle/nn/layer/vision.py b/python/paddle/nn/layer/vision.py
index e66e122be5259a8861b22d06258f34e1af89b6c9..e6d3af9a37b329231d625a4542eecea54d943e50 100644
--- a/python/paddle/nn/layer/vision.py
+++ b/python/paddle/nn/layer/vision.py
@@ -17,6 +17,8 @@
 from ...fluid.dygraph import layers
 from .. import functional
 
+__all__ = []
+
 
 class PixelShuffle(layers.Layer):
     """
diff --git a/python/paddle/nn/utils/weight_norm_hook.py b/python/paddle/nn/utils/weight_norm_hook.py
index 23df38ca08c45a4190a56e26fb47637eb349c407..8d2cc8062d2ccb408e3407033af924938d3d9aa1 100755
--- a/python/paddle/nn/utils/weight_norm_hook.py
+++ b/python/paddle/nn/utils/weight_norm_hook.py
@@ -19,6 +19,8 @@ from ...fluid import layers as F
 from ...fluid.layer_helper import LayerHelper
 from ...fluid.data_feeder import check_variable_and_dtype
 
+__all__ = []
+
 
 def l2_norm(x, axis, epsilon=1e-12, name=None):
     if len(x.shape) == 1:
diff --git a/python/paddle/optimizer/adadelta.py b/python/paddle/optimizer/adadelta.py
index af07d706e135d1e8596d6ef940d4131eeda4e28c..6c10d9bc2690a09b23ed2238ddd548d65f21df36 100644
--- a/python/paddle/optimizer/adadelta.py
+++ b/python/paddle/optimizer/adadelta.py
@@ -17,6 +17,8 @@ from ..fluid import core
 from ..fluid import framework
 from ..fluid.framework import Variable, name_scope
 
+__all__ = []
+
 
 class Adadelta(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/adagrad.py b/python/paddle/optimizer/adagrad.py
index 82615c92b7cfe19fda4f4deadbafa55dcc00a7d3..bb934e5a9262c778029df3b29d84b6dd7a71bde3 100644
--- a/python/paddle/optimizer/adagrad.py
+++ b/python/paddle/optimizer/adagrad.py
@@ -17,6 +17,8 @@ from ..fluid import core
 from ..fluid import framework
 from ..fluid.framework import Variable
 
+__all__ = []
+
 
 class Adagrad(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/adam.py b/python/paddle/optimizer/adam.py
index 358fa8fb97d7e3d92a9a4cf49b447d34c8336168..63ca462d1a26b8a17e540a1fac2284b77a523a21 100644
--- a/python/paddle/optimizer/adam.py
+++ b/python/paddle/optimizer/adam.py
@@ -24,6 +24,8 @@ from ..fluid.dygraph import base as imperative_base
 
 import paddle
 
+__all__ = []
+
 
 class Adam(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/adamax.py b/python/paddle/optimizer/adamax.py
index 175d932540deee87e247faaec149770a670ff96b..44ae89f49d1c0502a2f18ca9c4d58f10a6a9a69e 100644
--- a/python/paddle/optimizer/adamax.py
+++ b/python/paddle/optimizer/adamax.py
@@ -17,6 +17,8 @@ from ..fluid import core
 from ..fluid import framework
 from ..fluid.framework import Variable, name_scope
 
+__all__ = []
+
 
 class Adamax(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/adamw.py b/python/paddle/optimizer/adamw.py
index 899c2957a6a4f88e198deb1bccdaae6971d2069d..304f0b771826c946b7a28f17959aef7d426174c4 100644
--- a/python/paddle/optimizer/adamw.py
+++ b/python/paddle/optimizer/adamw.py
@@ -19,6 +19,8 @@ from ..fluid import framework
 from ..fluid.dygraph import base as imperative_base
 import paddle
 
+__all__ = []
+
 
 class AdamW(Adam):
     r"""
diff --git a/python/paddle/optimizer/lamb.py b/python/paddle/optimizer/lamb.py
index bab130ec5909895cbf470ee76a2ef34f76dfa53c..bff24e71c815366b6d12108436a82edb27d271a7 100644
--- a/python/paddle/optimizer/lamb.py
+++ b/python/paddle/optimizer/lamb.py
@@ -17,6 +17,8 @@ from ..fluid import core
 from ..fluid import framework
 from ..fluid.framework import Variable
 
+__all__ = []
+
 
 class Lamb(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/momentum.py b/python/paddle/optimizer/momentum.py
index c1dc0e8ddd8af5d7deed154ce791ac25fc219105..372143553e0c39988f5d0456125ee91bb94d3329 100644
--- a/python/paddle/optimizer/momentum.py
+++ b/python/paddle/optimizer/momentum.py
@@ -22,6 +22,8 @@ from ..fluid import layers
 import paddle.fluid as fluid
 from paddle.fluid.regularizer import L2DecayRegularizer
 
+__all__ = []
+
 
 class Momentum(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/optimizer.py b/python/paddle/optimizer/optimizer.py
index 9425ab1431e70b53c3a27024f0866aca209002b8..b06bd2a2b0be9539ed33f5c898da7d15f92a09a6 100644
--- a/python/paddle/optimizer/optimizer.py
+++ b/python/paddle/optimizer/optimizer.py
@@ -42,6 +42,8 @@ from ..fluid.wrapped_decorator import signature_safe_contextmanager
 from .. import compat as cpt
 from .lr import LRScheduler
 
+__all__ = []
+
 
 class Optimizer(object):
     r"""Optimizer Base class.
diff --git a/python/paddle/optimizer/rmsprop.py b/python/paddle/optimizer/rmsprop.py
index a2fd40bc0b369965734a24aaa7955155abc21aeb..b0bb0228c8ca82acc40b62e1a9074636b4def097 100644
--- a/python/paddle/optimizer/rmsprop.py
+++ b/python/paddle/optimizer/rmsprop.py
@@ -17,6 +17,8 @@ from ..fluid import core
 from ..fluid import framework
 from ..fluid.framework import Variable
 
+__all__ = []
+
 
 class RMSProp(Optimizer):
     r"""
diff --git a/python/paddle/optimizer/sgd.py b/python/paddle/optimizer/sgd.py
index ecac40aec72983306176959e7b6dff0709a8310a..4526034b405b0c97f1b06e07f3e4279cdc2d0d95 100644
--- a/python/paddle/optimizer/sgd.py
+++ b/python/paddle/optimizer/sgd.py
@@ -18,6 +18,8 @@ from ..fluid import framework
 from ..fluid.framework import Variable, name_scope
 from ..fluid.dygraph import no_grad
 
+__all__ = []
+
 
 class SGD(Optimizer):
     r"""
diff --git a/python/paddle/proto/__init__.py b/python/paddle/proto/__init__.py
index 07406a841ec90a79fbe5d0aca7b19d19d85e008a..f482d80548de139c907ce338f2c55889df04d4b6 100644
--- a/python/paddle/proto/__init__.py
+++ b/python/paddle/proto/__init__.py
@@ -14,3 +14,5 @@
 
 from paddle.proto.TrainerConfig_pb2 import OptimizationConfig, TrainerConfig
 from paddle.proto.ModelConfig_pb2 import ModelConfig
+
+__all__ = []
diff --git a/python/paddle/reader/decorator.py b/python/paddle/reader/decorator.py
index 0aefcf9e683da03b23d0a2503957ddb5d311aa00..3129029d82920964994e22ef28044f464b647270 100644
--- a/python/paddle/reader/decorator.py
+++ b/python/paddle/reader/decorator.py
@@ -27,6 +27,8 @@ import random
 import zlib
 import paddle.compat as cpt
 
+__all__ = []
+
 # On macOS, the 'spawn' start method is now the default in Python3.8 multiprocessing,
 # Paddle is currently unable to solve this, so forces the process to start using 
 # the 'fork' start method.
diff --git a/python/paddle/reader/tests/decorator_test.py b/python/paddle/reader/tests/decorator_test.py
index e15702e39c458eeccf2528eed43f80bff6448425..e11600a06fb9e9048e76c8f6e33c67699ef54634 100644
--- a/python/paddle/reader/tests/decorator_test.py
+++ b/python/paddle/reader/tests/decorator_test.py
@@ -19,6 +19,8 @@ import functools
 
 import paddle.reader
 
+__all__ = []
+
 
 def reader_creator_10(dur):
     def reader():
diff --git a/python/paddle/static/input.py b/python/paddle/static/input.py
index c1de576ee74c9e3daa04288eb31350c417d0bc17..f06c45cc369737403025ed264815a98b81acc6da 100644
--- a/python/paddle/static/input.py
+++ b/python/paddle/static/input.py
@@ -21,6 +21,8 @@ from paddle.fluid.data_feeder import check_type
 from paddle.fluid.framework import convert_np_dtype_to_dtype_
 from paddle.fluid.framework import static_only
 
+__all__ = []
+
 
 @static_only
 def data(name, shape, dtype=None, lod_level=0):
diff --git a/python/paddle/static/io.py b/python/paddle/static/io.py
index fc6d8b64f18cb3b800492ee12da7816faa09fc64..58e8ebc481d799955d8a738e4c8a581ccd319679 100644
--- a/python/paddle/static/io.py
+++ b/python/paddle/static/io.py
@@ -37,6 +37,8 @@ from paddle.fluid.framework import static_only, Parameter
 from paddle.fluid.executor import Executor, global_scope
 from paddle.fluid.log_helper import get_logger
 
+__all__ = []
+
 _logger = get_logger(
     __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
diff --git a/python/paddle/static/nn/common.py b/python/paddle/static/nn/common.py
index 659b7f45b26a7a2a3e75bd2d594f6b370d6ef506..b8133872aa934c17f9f888d3e745454a1808d9c3 100755
--- a/python/paddle/static/nn/common.py
+++ b/python/paddle/static/nn/common.py
@@ -15,6 +15,8 @@
 import paddle
 from paddle.fluid.framework import static_only
 
+__all__ = []
+
 
 @static_only
 def fc(x,
diff --git a/python/paddle/tensor/array.py b/python/paddle/tensor/array.py
index ee28d47a9a9fd5aa2189161329aeaddd4d30a64b..6c3d5c577e7452c0c654a6b4e239eb688e8b7c2f 100644
--- a/python/paddle/tensor/array.py
+++ b/python/paddle/tensor/array.py
@@ -16,6 +16,8 @@
 
 from ..fluid import layers
 
+__all__ = []
+
 
 def array_length(array):
     """
diff --git a/python/paddle/tensor/attribute.py b/python/paddle/tensor/attribute.py
index 1f709ac4dbc8627eaf4ba30e28987dbeefc5fbae..131afca0d676dace32f24df992e0296a787ba52a 100644
--- a/python/paddle/tensor/attribute.py
+++ b/python/paddle/tensor/attribute.py
@@ -22,6 +22,8 @@ from ..fluid.data_feeder import check_variable_and_dtype
 from ..fluid.layers import rank  # noqa: F401
 from ..fluid.layers import shape  # noqa: F401
 
+__all__ = []
+
 
 def _complex_to_real_dtype(dtype):
     if dtype == core.VarDesc.VarType.COMPLEX64:
diff --git a/python/paddle/tensor/creation.py b/python/paddle/tensor/creation.py
index b31984f684695fec44d3404f757cf44846e308a2..361c0e80f90d7dd27d7e5bfc11813d476aa12697 100644
--- a/python/paddle/tensor/creation.py
+++ b/python/paddle/tensor/creation.py
@@ -31,6 +31,8 @@ from ..fluid.framework import convert_np_dtype_to_dtype_, in_dygraph_mode, _varb
 from ..fluid.layers import linspace  # noqa: F401
 import paddle
 
+__all__ = []
+
 
 @dygraph_only
 def to_tensor(data, dtype=None, place=None, stop_gradient=True):
diff --git a/python/paddle/tensor/linalg.py b/python/paddle/tensor/linalg.py
index 87e3bce4b1d698ca8fc68024b72109d8f95a2ec3..8aa9c9bd2bd7f924e05fa388fdc75b2a09ce4ee7 100644
--- a/python/paddle/tensor/linalg.py
+++ b/python/paddle/tensor/linalg.py
@@ -21,6 +21,8 @@ from ..fluid.layers import transpose  # noqa: F401
 from paddle.common_ops_import import core
 from paddle.common_ops_import import VarDesc
 
+__all__ = []
+
 
 def matmul(x, y, transpose_x=False, transpose_y=False, name=None):
     """
diff --git a/python/paddle/tensor/logic.py b/python/paddle/tensor/logic.py
index 14154fb06f83eea9d3514600833a315aca43cd9d..bdf2c477d865884bb3d10f6dd16a1f45c2284c4e 100644
--- a/python/paddle/tensor/logic.py
+++ b/python/paddle/tensor/logic.py
@@ -28,6 +28,8 @@ from ..fluid.layers import logical_xor  # noqa: F401
 
 from paddle.common_ops_import import core
 
+__all__ = []
+
 
 def equal_all(x, y, name=None):
     """
diff --git a/python/paddle/tensor/manipulation.py b/python/paddle/tensor/manipulation.py
index dc811ea0f3fa6d78c9f2d5ab7f5a87809fb2c70b..1a5962042675d2a084ac2c0e89d7df9439f5582a 100644
--- a/python/paddle/tensor/manipulation.py
+++ b/python/paddle/tensor/manipulation.py
@@ -34,6 +34,8 @@ from ..fluid import layers
 import paddle
 import warnings
 
+__all__ = []
+
 
 def _print_warning_in_static_mode(api_name):
     warnings.warn(
diff --git a/python/paddle/tensor/math.py b/python/paddle/tensor/math.py
index 65f57b4b4e93babc8eb33e26d2e283e70a8d58c7..84c67a9ae8d9dcce0fff6431a5c509f08f452108 100755
--- a/python/paddle/tensor/math.py
+++ b/python/paddle/tensor/math.py
@@ -59,6 +59,8 @@ from ..fluid.layers import sin    # noqa: F401
 from ..fluid.layers import multiplex    # noqa: F401
 from ..fluid import layers
 
+__all__ = []
+
 _supported_int_dtype_ = [
     VarDesc.VarType.UINT8,
     VarDesc.VarType.INT8,
diff --git a/python/paddle/tensor/random.py b/python/paddle/tensor/random.py
index 7e1eef8f32508787d51604ac8e8d09ee8c12a8ca..69a463454476332044efedfe15cb7e2a890b8445 100644
--- a/python/paddle/tensor/random.py
+++ b/python/paddle/tensor/random.py
@@ -21,6 +21,8 @@ from ..fluid.data_feeder import check_variable_and_dtype, check_type, check_dtyp
 from ..fluid.layers import utils
 import paddle
 
+__all__ = []
+
 
 def bernoulli(x, name=None):
     """
diff --git a/python/paddle/tensor/search.py b/python/paddle/tensor/search.py
index ac303d2311eb99e3bb56af9761751f34dbf13fcc..3d8a75f9277af1e159a74eeb61721948bc874c88 100644
--- a/python/paddle/tensor/search.py
+++ b/python/paddle/tensor/search.py
@@ -25,6 +25,8 @@ from paddle.common_ops_import import VarDesc
 # from ..fluid.layers import has_inf  #DEFINE_ALIAS
 # from ..fluid.layers import has_nan  #DEFINE_ALIAS
 
+__all__ = []
+
 
 def argsort(x, axis=-1, descending=False, name=None):
     """
diff --git a/python/paddle/tensor/stat.py b/python/paddle/tensor/stat.py
index fa7a278a2b52c2afd1ad38f5cc9303e6135d9b4d..8c74360a17d05bda855f338daf9ad6885fa1e2b6 100644
--- a/python/paddle/tensor/stat.py
+++ b/python/paddle/tensor/stat.py
@@ -23,6 +23,8 @@ from .search import where
 from ..fluid.data_feeder import convert_dtype, check_variable_and_dtype, check_type, check_dtype
 import paddle
 
+__all__ = []
+
 
 def mean(x, axis=None, keepdim=False, name=None):
     """
diff --git a/python/paddle/tensor/to_string.py b/python/paddle/tensor/to_string.py
index 2e76a8d47a7738afefc6c2aa27f53c90e7a921a3..9d07840be6882562ff40c4bdb7ed2f87199feffc 100644
--- a/python/paddle/tensor/to_string.py
+++ b/python/paddle/tensor/to_string.py
@@ -17,6 +17,8 @@ import numpy as np
 from paddle.fluid.layers import core
 from paddle.fluid.data_feeder import convert_dtype, check_variable_and_dtype, check_type, check_dtype
 
+__all__ = []
+
 
 class PrintOptions(object):
     precision = 8
diff --git a/python/paddle/tests/test_dataset_cifar.py b/python/paddle/tests/test_dataset_cifar.py
index e84f73188666aa1c90fd978fc2e96ff44f18a48a..abf79fb1e3974ce0c1d9de4efd1df05056ff3821 100644
--- a/python/paddle/tests/test_dataset_cifar.py
+++ b/python/paddle/tests/test_dataset_cifar.py
@@ -15,7 +15,7 @@
 import unittest
 import numpy as np
 
-from paddle.vision.datasets import *
+from paddle.vision.datasets import Cifar10, Cifar100
 
 
 class TestCifar10Train(unittest.TestCase):
diff --git a/python/paddle/tests/test_dataset_conll05.py b/python/paddle/tests/test_dataset_conll05.py
index e35c04275d20478336da76c9ba47c98960a9ea24..9eb0036718b35516eb651a2937f5c49ac8cca14b 100644
--- a/python/paddle/tests/test_dataset_conll05.py
+++ b/python/paddle/tests/test_dataset_conll05.py
@@ -16,7 +16,7 @@ import os
 import unittest
 import numpy as np
 
-from paddle.text.datasets import *
+from paddle.text.datasets import Conll05st
 
 
 class TestConll05st(unittest.TestCase):
diff --git a/python/paddle/tests/test_dataset_imdb.py b/python/paddle/tests/test_dataset_imdb.py
index 62c75ab232c8db10f99257fdae17191f94726b61..aed8c387409dce30710cfb3b65232310f99f8410 100644
--- a/python/paddle/tests/test_dataset_imdb.py
+++ b/python/paddle/tests/test_dataset_imdb.py
@@ -15,7 +15,7 @@
 import unittest
 import numpy as np
 
-from paddle.text.datasets import *
+from paddle.text.datasets import Imdb
 
 
 class TestImdbTrain(unittest.TestCase):
diff --git a/python/paddle/tests/test_dataset_imikolov.py b/python/paddle/tests/test_dataset_imikolov.py
index f4f0b8e48367725abb4ebe1fe5b0598ed6e749f1..6ffeeda73c362c69d6a614cdf43888f34c05d875 100644
--- a/python/paddle/tests/test_dataset_imikolov.py
+++ b/python/paddle/tests/test_dataset_imikolov.py
@@ -15,7 +15,7 @@
 import unittest
 import numpy as np
 
-from paddle.text.datasets import *
+from paddle.text.datasets import Imikolov
 
 
 class TestImikolovTrain(unittest.TestCase):
diff --git a/python/paddle/tests/test_dataset_movielens.py b/python/paddle/tests/test_dataset_movielens.py
index 3b61fd6f5c7c22bca5114579fdafe46405f77118..e5c6d8376eed970b0016593e874b89dbf8ceb459 100644
--- a/python/paddle/tests/test_dataset_movielens.py
+++ b/python/paddle/tests/test_dataset_movielens.py
@@ -15,7 +15,7 @@
 import unittest
 import numpy as np
 
-from paddle.text.datasets import *
+from paddle.text.datasets import Movielens
 
 
 class TestMovielensTrain(unittest.TestCase):
diff --git a/python/paddle/tests/test_dataset_uci_housing.py b/python/paddle/tests/test_dataset_uci_housing.py
index 623c7d24d09da7501edd6a8d86e60fc3b772d086..bdf960b43368720c5966cf886aa4806b5ee5da71 100644
--- a/python/paddle/tests/test_dataset_uci_housing.py
+++ b/python/paddle/tests/test_dataset_uci_housing.py
@@ -19,7 +19,7 @@ import tempfile
 import shutil
 import cv2
 
-from paddle.text.datasets import *
+from paddle.text.datasets import UCIHousing, WMT14
 
 
 class TestUCIHousingTrain(unittest.TestCase):
diff --git a/python/paddle/tests/test_dataset_wmt.py b/python/paddle/tests/test_dataset_wmt.py
index b4945cb90f991e907812129f3918ef0137565244..3e63090c9f0fff424ec0a7e0bb0885cc3e434ed5 100644
--- a/python/paddle/tests/test_dataset_wmt.py
+++ b/python/paddle/tests/test_dataset_wmt.py
@@ -15,7 +15,7 @@
 import unittest
 import numpy as np
 
-from paddle.text.datasets import *
+from paddle.text.datasets import WMT14, WMT16
 
 
 class TestWMT14Train(unittest.TestCase):
diff --git a/python/paddle/tests/test_datasets.py b/python/paddle/tests/test_datasets.py
index 89fa01cbceb45c4812cbe6363c9ae0af9ed6ae7d..c93bac3ac27e85e729244cf804d70258a8cefa79 100644
--- a/python/paddle/tests/test_datasets.py
+++ b/python/paddle/tests/test_datasets.py
@@ -20,7 +20,7 @@ import shutil
 import cv2
 
 import paddle.vision.transforms as T
-from paddle.vision.datasets import *
+from paddle.vision.datasets import DatasetFolder, ImageFolder, MNIST, FashionMNIST, Flowers
 from paddle.dataset.common import _check_exists_and_download
 
 
diff --git a/python/paddle/text/datasets/__init__.py b/python/paddle/text/datasets/__init__.py
index 9a00081469a8b0dc7bd561fcddff0eace05f99d3..118917049928bf2f191d49bedc9c3bee5095004b 100644
--- a/python/paddle/text/datasets/__init__.py
+++ b/python/paddle/text/datasets/__init__.py
@@ -19,3 +19,5 @@ from .movielens import Movielens  # noqa: F401
 from .uci_housing import UCIHousing  # noqa: F401
 from .wmt14 import WMT14  # noqa: F401
 from .wmt16 import WMT16  # noqa: F401
+
+__all__ = []
diff --git a/python/paddle/text/datasets/conll05.py b/python/paddle/text/datasets/conll05.py
index 070c787db857480ed5f36a6ad2e5cc8d5aa9cefb..7dd29637706f321df324bda429b930289ded760e 100644
--- a/python/paddle/text/datasets/conll05.py
+++ b/python/paddle/text/datasets/conll05.py
@@ -24,6 +24,8 @@ from paddle.io import Dataset
 import paddle.compat as cpt
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 DATA_URL = 'http://paddlemodels.bj.bcebos.com/conll05st/conll05st-tests.tar.gz'
 DATA_MD5 = '387719152ae52d60422c016e92a742fc'
 WORDDICT_URL = 'http://paddlemodels.bj.bcebos.com/conll05st%2FwordDict.txt'
diff --git a/python/paddle/text/datasets/imdb.py b/python/paddle/text/datasets/imdb.py
index c64890dc43d77bbb518076ec92459a6b24d011cf..f4fe7eb174bb7592c86d6c9cd89d646f5b22f6e4 100644
--- a/python/paddle/text/datasets/imdb.py
+++ b/python/paddle/text/datasets/imdb.py
@@ -24,6 +24,8 @@ import collections
 from paddle.io import Dataset
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 URL = 'https://dataset.bj.bcebos.com/imdb%2FaclImdb_v1.tar.gz'
 MD5 = '7c2ac02c03563afcf9b574c7e56c153a'
 
diff --git a/python/paddle/text/datasets/imikolov.py b/python/paddle/text/datasets/imikolov.py
index 7e4daf731a23a14b6280aafc516d242421e2b05c..9c84669d6b8d8d05ccb77dbd7a3188ed923d5dd5 100644
--- a/python/paddle/text/datasets/imikolov.py
+++ b/python/paddle/text/datasets/imikolov.py
@@ -22,6 +22,8 @@ import collections
 from paddle.io import Dataset
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 URL = 'https://dataset.bj.bcebos.com/imikolov%2Fsimple-examples.tgz'
 MD5 = '30177ea32e27c525793142b6bf2c8e2d'
 
diff --git a/python/paddle/text/datasets/movielens.py b/python/paddle/text/datasets/movielens.py
index 7741e82194ca7ea74ce70ede5344f470ed58c65f..798a7c590e17b675634a9b365d4eb0d68c677d52 100644
--- a/python/paddle/text/datasets/movielens.py
+++ b/python/paddle/text/datasets/movielens.py
@@ -26,6 +26,8 @@ from paddle.io import Dataset
 import paddle.compat as cpt
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 age_table = [1, 18, 25, 35, 45, 50, 56]
 
 URL = 'https://dataset.bj.bcebos.com/movielens%2Fml-1m.zip'
diff --git a/python/paddle/text/datasets/uci_housing.py b/python/paddle/text/datasets/uci_housing.py
index c876ed409cf9928e9decd67ea16fb62532fb50fb..597b1e1e8185ef637221760365d4dcf33f8d1ea7 100644
--- a/python/paddle/text/datasets/uci_housing.py
+++ b/python/paddle/text/datasets/uci_housing.py
@@ -21,6 +21,8 @@ import paddle
 from paddle.io import Dataset
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 URL = 'http://paddlemodels.bj.bcebos.com/uci_housing/housing.data'
 MD5 = 'd4accdce7a25600298819f8e28e8d593'
 feature_names = [
diff --git a/python/paddle/text/datasets/wmt14.py b/python/paddle/text/datasets/wmt14.py
index 96d29c79c6a9d11ef95f276287354a046d804bab..424a564216d19072d3927358fc1ff9c3a3af307b 100644
--- a/python/paddle/text/datasets/wmt14.py
+++ b/python/paddle/text/datasets/wmt14.py
@@ -22,6 +22,8 @@ from paddle.io import Dataset
 import paddle.compat as cpt
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 URL_DEV_TEST = ('http://www-lium.univ-lemans.fr/~schwenk/'
                 'cslm_joint_paper/data/dev+test.tgz')
 MD5_DEV_TEST = '7d7897317ddd8ba0ae5c5fa7248d3ff5'
diff --git a/python/paddle/text/datasets/wmt16.py b/python/paddle/text/datasets/wmt16.py
index 5605fd2aecbdcc2c6daf40bbb46e0395978d58bf..f95cbe771cadc834a4de697660caa22a0729521e 100644
--- a/python/paddle/text/datasets/wmt16.py
+++ b/python/paddle/text/datasets/wmt16.py
@@ -27,6 +27,8 @@ from paddle.io import Dataset
 import paddle.compat as cpt
 from paddle.dataset.common import _check_exists_and_download
 
+__all__ = []
+
 DATA_URL = ("http://paddlemodels.bj.bcebos.com/wmt/wmt16.tar.gz")
 DATA_MD5 = "0c38be43600334966403524a40dcd81e"
 
diff --git a/python/paddle/utils/deprecated.py b/python/paddle/utils/deprecated.py
index a46f1ae3a2c2e3a255a1e7fefec25907c8c48e4c..5390dea69fe7d6a4294367b90136ea4d3052d7c6 100755
--- a/python/paddle/utils/deprecated.py
+++ b/python/paddle/utils/deprecated.py
@@ -19,6 +19,8 @@ import warnings
 import functools
 import paddle
 
+__all__ = []
+
 # NOTE(zhiqiu): Since python 3.2, DeprecationWarning is ignored by default,
 # and since python 3.7, it is once again shown by default when triggered directly by code in __main__.
 # See details: https://docs.python.org/3/library/warnings.html#default-warning-filter
diff --git a/python/paddle/utils/download.py b/python/paddle/utils/download.py
index bd70013e1120e7adbb08a79c24041826885c92cd..ddd1dad9dbdf5a08270c9d28a8d4810722003e0e 100644
--- a/python/paddle/utils/download.py
+++ b/python/paddle/utils/download.py
@@ -55,6 +55,8 @@ except:
 import logging
 logger = logging.getLogger(__name__)
 
+__all__ = []
+
 WEIGHTS_HOME = osp.expanduser("~/.cache/paddle/hapi/weights")
 
 DOWNLOAD_RETRY_LIMIT = 3
diff --git a/python/paddle/utils/image_util.py b/python/paddle/utils/image_util.py
index b113f574e9fac069ed065336b35102ff6a3a6255..18be9366c40a7c04e68c2d4d2eb6798ba082456a 100644
--- a/python/paddle/utils/image_util.py
+++ b/python/paddle/utils/image_util.py
@@ -16,6 +16,8 @@ import numpy as np
 from PIL import Image
 from six.moves import cStringIO as StringIO
 
+__all__ = []
+
 
 def resize_image(img, target_size):
     """
diff --git a/python/paddle/utils/install_check.py b/python/paddle/utils/install_check.py
index 5d70cf61007a64a0c2352483cd0ce4c2f82a01dc..69baa4facfa96c3d64561697ba001be30319781d 100644
--- a/python/paddle/utils/install_check.py
+++ b/python/paddle/utils/install_check.py
@@ -20,6 +20,8 @@ import numpy as np
 
 import paddle
 
+__all__ = []
+
 
 def _simple_network():
     """
diff --git a/python/paddle/utils/lazy_import.py b/python/paddle/utils/lazy_import.py
index ea07077b2da2a93e3cc60e8f871396682ad41eb0..d9146422819f8aa2262fca89cf9e0dd673695b96 100644
--- a/python/paddle/utils/lazy_import.py
+++ b/python/paddle/utils/lazy_import.py
@@ -15,6 +15,8 @@
 
 import importlib
 
+__all__ = []
+
 
 def try_import(module_name):
     """Try importing a module, with an informative error message on failure."""
diff --git a/python/paddle/utils/op_version.py b/python/paddle/utils/op_version.py
index a1fa230d64faac73dac15782fac08bc784fbc14b..6e81b5a2c17bb143cd8c3fba4853c863a1df8db2 100644
--- a/python/paddle/utils/op_version.py
+++ b/python/paddle/utils/op_version.py
@@ -14,6 +14,8 @@
 
 from ..fluid import core
 
+__all__ = []
+
 
 def Singleton(cls):
     _instance = {}