diff --git a/python/paddle/utils/__init__.py b/python/paddle/utils/__init__.py
index d32fa4c88c4fee04121918617d0ce26b769c8639..40c9d415e11f1b6c8e194235b4ea18abf249b0b8 100644
--- a/python/paddle/utils/__init__.py
+++ b/python/paddle/utils/__init__.py
@@ -12,21 +12,25 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .profiler import ProfilerOptions
-from .profiler import Profiler
-from .profiler import get_profiler
-from .deprecated import deprecated
-from .lazy_import import try_import
-from .op_version import OpLastCheckpointChecker
-from .install_check import run_check
-from ..fluid.framework import unique_name
-from ..fluid.framework import require_version
+from .profiler import ProfilerOptions  # noqa: F401
+from .profiler import Profiler  # noqa: F401
+from .profiler import get_profiler  # noqa: F401
+from .deprecated import deprecated  # noqa: F401
+from .lazy_import import try_import  # noqa: F401
+from .op_version import OpLastCheckpointChecker  # noqa: F401
+from .install_check import run_check  # noqa: F401
+from ..fluid.framework import unique_name  # noqa: F401
+from ..fluid.framework import require_version  # noqa: F401
 
-from . import download
+from . import download  # noqa: F401
+from . import image_util  # noqa: F401
+from . import cpp_extension  # noqa: F401
 
-from . import cpp_extension
-
-__all__ = ['dump_config', 'deprecated', 'download', 'run_check']
-
-#TODO: define new api under this directory
-__all__ += ['unique_name', 'require_version']
+__all__ = [     #noqa
+           'deprecated',
+           'download',
+           'run_check',
+           'unique_name',
+           'require_version',
+           'try_import'
+]
diff --git a/python/paddle/utils/cpp_extension/__init__.py b/python/paddle/utils/cpp_extension/__init__.py
index 130ab79b3038df026b3eeabcef45eae192aba78c..cef2716b7f39604a268b259f4af883fad71bce16 100644
--- a/python/paddle/utils/cpp_extension/__init__.py
+++ b/python/paddle/utils/cpp_extension/__init__.py
@@ -12,18 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .cpp_extension import CUDAExtension
-from .cpp_extension import CppExtension
-from .cpp_extension import BuildExtension
-from .cpp_extension import load, setup
+from .cpp_extension import CUDAExtension  # noqa: F401
+from .cpp_extension import CppExtension  # noqa: F401
+from .cpp_extension import BuildExtension  # noqa: F401
+from .cpp_extension import load  # noqa: F401
+from .cpp_extension import setup  # noqa: F401
 
-from .extension_utils import parse_op_info
-from .extension_utils import get_build_directory
-from .extension_utils import load_op_meta_info_and_register_op
+from .extension_utils import parse_op_info  # noqa: F401
+from .extension_utils import get_build_directory  # noqa: F401
+from .extension_utils import load_op_meta_info_and_register_op  # noqa: F401
 
-from . import cpp_extension
-from . import extension_utils
-
-__all__ = [
-    'CppExtension', 'CUDAExtension', 'load', 'setup', 'get_build_directory'
+__all__ = [ #noqa
+        'CppExtension',
+        'CUDAExtension',
+        'load',
+        'setup',
+        'get_build_directory'
 ]
diff --git a/python/paddle/utils/download.py b/python/paddle/utils/download.py
index dda8abeff21c062011ba7e558f330eb92c87836a..bd70013e1120e7adbb08a79c24041826885c92cd 100644
--- a/python/paddle/utils/download.py
+++ b/python/paddle/utils/download.py
@@ -55,8 +55,6 @@ except:
 import logging
 logger = logging.getLogger(__name__)
 
-__all__ = ['get_weights_path_from_url']
-
 WEIGHTS_HOME = osp.expanduser("~/.cache/paddle/hapi/weights")
 
 DOWNLOAD_RETRY_LIMIT = 3
diff --git a/python/paddle/utils/install_check.py b/python/paddle/utils/install_check.py
index b39009985e735569ea479aa3f35557d30c13a586..5d70cf61007a64a0c2352483cd0ce4c2f82a01dc 100644
--- a/python/paddle/utils/install_check.py
+++ b/python/paddle/utils/install_check.py
@@ -20,8 +20,6 @@ import numpy as np
 
 import paddle
 
-__all__ = ['run_check']
-
 
 def _simple_network():
     """
diff --git a/python/paddle/utils/op_version.py b/python/paddle/utils/op_version.py
index 68acc9de081518959b0016f8e7ec2064b6e01527..a1fa230d64faac73dac15782fac08bc784fbc14b 100644
--- a/python/paddle/utils/op_version.py
+++ b/python/paddle/utils/op_version.py
@@ -14,8 +14,6 @@
 
 from ..fluid import core
 
-__all__ = ['OpLastCheckpointChecker']
-
 
 def Singleton(cls):
     _instance = {}
diff --git a/python/paddle/utils/profiler.py b/python/paddle/utils/profiler.py
index 89c0d2cac68a9779bfde85bc87790b64fc38fbd6..cc33342ec5a51b4db514270b9169e843701656b0 100644
--- a/python/paddle/utils/profiler.py
+++ b/python/paddle/utils/profiler.py
@@ -18,9 +18,22 @@ import sys
 import warnings
 
 from ..fluid import core
-from ..fluid.profiler import *
-
-__all__ = ['ProfilerOptions', 'Profiler', 'get_profiler']
+from ..fluid.profiler import cuda_profiler  # noqa: F401
+from ..fluid.profiler import start_profiler
+from ..fluid.profiler import profiler  # noqa: F401
+from ..fluid.profiler import stop_profiler
+from ..fluid.profiler import reset_profiler
+
+__all__ = [     #noqa
+           'Profiler',
+           'get_profiler',
+           'ProfilerOptions',
+           'cuda_profiler',
+           'start_profiler',
+           'profiler',
+           'stop_profiler',
+           'reset_profiler'
+]
 
 
 class ProfilerOptions(object):