diff --git a/python/xorbits/_mars/tensor/__init__.py b/python/xorbits/_mars/tensor/__init__.py
index e4c836301..ee9cd566b 100644
--- a/python/xorbits/_mars/tensor/__init__.py
+++ b/python/xorbits/_mars/tensor/__init__.py
@@ -304,6 +304,7 @@
 from ..core import ExecutableTuple
 
 from numpy import __version__ as np_ver
+
 if np_ver >= "2.0.0":
     from numpy.exceptions import AxisError
 else:
diff --git a/python/xorbits/_mars/tensor/lib/index_tricks.py b/python/xorbits/_mars/tensor/lib/index_tricks.py
index 0444b05ad..4b07ee99a 100644
--- a/python/xorbits/_mars/tensor/lib/index_tricks.py
+++ b/python/xorbits/_mars/tensor/lib/index_tricks.py
@@ -19,6 +19,7 @@
 from numpy.core.numeric import ScalarType
 
 from numpy import __version__ as np_ver
+
 if np_ver >= "2.0.0":
     from numpy.lib._index_tricks_impl import ndindex
 else:
@@ -351,6 +352,7 @@ def __getitem__(self, key):
         # find_common_type is deprecated
         if np_ver >= "2.0.0":
             from numpy import result_type
+
             final_dtype = result_type(arraytypes, scalartypes)
         else:
             from numpy.core.numerictypes import find_common_type
diff --git a/python/xorbits/numpy/__init__.py b/python/xorbits/numpy/__init__.py
index 64a1f49a5..a4f8d436d 100644
--- a/python/xorbits/numpy/__init__.py
+++ b/python/xorbits/numpy/__init__.py
@@ -16,6 +16,7 @@
 from typing import Any, Callable, Dict, Optional
 
 from numpy import __version__ as np_ver
+
 if np_ver >= "2.0.0":
     from numpy.exceptions import AxisError
     from numpy.lib._index_tricks_impl import ndindex
diff --git a/python/xorbits/numpy/lib/index_tricks.py b/python/xorbits/numpy/lib/index_tricks.py
index 5d1ad4a4b..c49994169 100644
--- a/python/xorbits/numpy/lib/index_tricks.py
+++ b/python/xorbits/numpy/lib/index_tricks.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 import numpy
 from numpy import __version__ as np_ver
+
 if np_ver >= "2.0.0":
     from numpy.lib import _index_tricks_impl as index_tricks
 else: