diff --git a/modelscope/utils/nlp/space/db_ops.py b/modelscope/utils/nlp/space/db_ops.py
index a1bd34ea..2168c079 100644
--- a/modelscope/utils/nlp/space/db_ops.py
+++ b/modelscope/utils/nlp/space/db_ops.py
@@ -202,7 +202,7 @@ class MultiWozDB(object):
                             ':'
                         )  # raise error if time value is not xx:xx format
                         v = int(h) * 60 + int(m)
-                    except:
+                    except Exception:
                         match = False
                         break
                     time = int(db_ent[s].split(':')[0]) * 60 + int(
@@ -243,7 +243,12 @@ class MultiWozDB(object):
 
         flag = True
         for key, val in constraints.items():
-            if val == '' or val == 'dontcare' or val == 'not mentioned' or val == "don't care" or val == 'dont care' or val == "do n't care":
+            if val == '' \
+                    or val == 'dontcare' \
+                    or val == 'not mentioned' \
+                    or val == "don't care" \
+                    or val == 'dont care' \
+                    or val == "do n't care":
                 pass
             else:
                 if flag:
@@ -270,7 +275,7 @@ class MultiWozDB(object):
         try:  # "select * from attraction  where name = 'queens college'"
             print(sql_query)
             return self.sql_dbs[domain].execute(sql_query).fetchall()
-        except:
+        except Exception:
             return []  # TODO test it
 
 
diff --git a/tests/preprocessors/nlp/test_dialog_generation.py b/tests/preprocessors/nlp/test_dialog_generation.py
index ca07922b..319456d8 100644
--- a/tests/preprocessors/nlp/test_dialog_generation.py
+++ b/tests/preprocessors/nlp/test_dialog_generation.py
@@ -2,11 +2,10 @@
 
 import unittest
 
-from tests.case.nlp.dialog_generation_case import test_case
-
 from maas_lib.preprocessors import DialogGenerationPreprocessor
 from maas_lib.utils.constant import Fields, InputFields
 from maas_lib.utils.logger import get_logger
+from tests.case.nlp.dialog_generation_case import test_case
 
 logger = get_logger()
 
diff --git a/tests/preprocessors/nlp/test_dialog_intent.py b/tests/preprocessors/nlp/test_dialog_intent.py
index 3f0500b7..60fcf049 100644
--- a/tests/preprocessors/nlp/test_dialog_intent.py
+++ b/tests/preprocessors/nlp/test_dialog_intent.py
@@ -2,11 +2,10 @@
 
 import unittest
 
-from tests.case.nlp.dialog_intent_case import test_case
-
 from maas_lib.preprocessors import DialogIntentPreprocessor
 from maas_lib.utils.constant import Fields, InputFields
 from maas_lib.utils.logger import get_logger
+from tests.case.nlp.dialog_intent_case import test_case
 
 logger = get_logger()