diff --git a/pyproject.toml b/pyproject.toml
index 3721ffed72717c74fb1db0db3b64a942830718d2..810c5d9f64e9cea6ab6f58a6fca8a3950b7a8156 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -107,8 +107,6 @@ ignore = [
     "F403",
     "F632",
     "F811",
-    "F821",
-    "F901",
     "C408",
     "C417",
     "PLR0402",
diff --git a/test/cinn/test_paddle_model_convertor.py b/test/cinn/test_paddle_model_convertor.py
index 8d8313807a2ff290544f06cb3f044cef53f43a9b..699bb0dc093afc246e06298adaa7bf6992fa0556 100644
--- a/test/cinn/test_paddle_model_convertor.py
+++ b/test/cinn/test_paddle_model_convertor.py
@@ -21,7 +21,11 @@ import sys
 import unittest
 
 import numpy as np
-from cinn.common import DefaultNVGPUTarget, is_compiled_with_cuda
+from cinn.common import (
+    DefaultHostTarget,
+    DefaultNVGPUTarget,
+    is_compiled_with_cuda,
+)
 from cinn.frontend import PaddleModelConvertor
 from cinn.runtime import seed as cinn_seed
 from op_mappers.op_mapper_test import OpMapperTest
diff --git a/test/cinn/test_utils.py b/test/cinn/test_utils.py
index 45dd9ae629945cc35c7ba6ef710a5a6f25eaf1cb..e1a999d40df549837229d9095c08fab6d502a3fd 100755
--- a/test/cinn/test_utils.py
+++ b/test/cinn/test_utils.py
@@ -43,7 +43,7 @@ class SingleOpTester(unittest.TestCase):
         '''
         create the target of the operator's execution output.
         '''
-        raise NotImplemented
+        raise NotImplementedError
 
     def test_op(self):
         '''