diff --git a/qlib/contrib/model/pytorch_alstm.py b/qlib/contrib/model/pytorch_alstm.py
index b4fbbd504..a149272da 100644
--- a/qlib/contrib/model/pytorch_alstm.py
+++ b/qlib/contrib/model/pytorch_alstm.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_alstm_ts.py b/qlib/contrib/model/pytorch_alstm_ts.py
index 87ebb489b..c38727b9e 100644
--- a/qlib/contrib/model/pytorch_alstm_ts.py
+++ b/qlib/contrib/model/pytorch_alstm_ts.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_gats.py b/qlib/contrib/model/pytorch_gats.py
index 9a077b736..53afb5404 100644
--- a/qlib/contrib/model/pytorch_gats.py
+++ b/qlib/contrib/model/pytorch_gats.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 import torch
 import torch.nn as nn
 import torch.optim as optim
diff --git a/qlib/contrib/model/pytorch_gats_ts.py b/qlib/contrib/model/pytorch_gats_ts.py
index 35fd95ab5..f02bf1e47 100644
--- a/qlib/contrib/model/pytorch_gats_ts.py
+++ b/qlib/contrib/model/pytorch_gats_ts.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 import torch
 import torch.nn as nn
 import torch.optim as optim
diff --git a/qlib/contrib/model/pytorch_gru.py b/qlib/contrib/model/pytorch_gru.py
index 8b59e0ee4..5eba33595 100755
--- a/qlib/contrib/model/pytorch_gru.py
+++ b/qlib/contrib/model/pytorch_gru.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_gru_ts.py b/qlib/contrib/model/pytorch_gru_ts.py
index 514b44c8e..2839b35e4 100755
--- a/qlib/contrib/model/pytorch_gru_ts.py
+++ b/qlib/contrib/model/pytorch_gru_ts.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_lstm.py b/qlib/contrib/model/pytorch_lstm.py
index b4920921e..636ef6e3a 100755
--- a/qlib/contrib/model/pytorch_lstm.py
+++ b/qlib/contrib/model/pytorch_lstm.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_lstm_ts.py b/qlib/contrib/model/pytorch_lstm_ts.py
index 9d513dff8..c978e84c7 100755
--- a/qlib/contrib/model/pytorch_lstm_ts.py
+++ b/qlib/contrib/model/pytorch_lstm_ts.py
@@ -9,14 +9,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_nn.py b/qlib/contrib/model/pytorch_nn.py
index 326af92db..caf34b330 100644
--- a/qlib/contrib/model/pytorch_nn.py
+++ b/qlib/contrib/model/pytorch_nn.py
@@ -19,7 +19,7 @@ from ...model.base import Model
 from ...data.dataset import DatasetH
 from ...data.dataset.handler import DataHandlerLP
 from ...utils import unpack_archive_with_buffer, save_multiple_parts_file, get_or_create_path, drop_nan_by_y_index
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 from ...workflow import R
 
 
diff --git a/qlib/contrib/model/pytorch_sfm.py b/qlib/contrib/model/pytorch_sfm.py
index 0bb2b4704..db3e8bb12 100644
--- a/qlib/contrib/model/pytorch_sfm.py
+++ b/qlib/contrib/model/pytorch_sfm.py
@@ -8,14 +8,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn
diff --git a/qlib/contrib/model/pytorch_tabnet.py b/qlib/contrib/model/pytorch_tabnet.py
index a33ba0f78..450e6f5d1 100644
--- a/qlib/contrib/model/pytorch_tabnet.py
+++ b/qlib/contrib/model/pytorch_tabnet.py
@@ -7,14 +7,13 @@ import os
 import numpy as np
 import pandas as pd
 import copy
-from sklearn.metrics import roc_auc_score, mean_squared_error
 from ...utils import (
     unpack_archive_with_buffer,
     save_multiple_parts_file,
     get_or_create_path,
     drop_nan_by_y_index,
 )
-from ...log import get_module_logger, TimeInspector
+from ...log import get_module_logger
 
 import torch
 import torch.nn as nn