diff --git a/examples/cpu/features/int8_recipe_tuning/int8_autotune.py b/examples/cpu/features/int8_recipe_tuning/int8_autotune.py
index b70155ca4..05b0a3d10 100644
--- a/examples/cpu/features/int8_recipe_tuning/int8_autotune.py
+++ b/examples/cpu/features/int8_recipe_tuning/int8_autotune.py
@@ -84,7 +84,7 @@ def train(dataloader, model, loss_fn, optimizer):
 
 epochs = 5
 for t in range(epochs):
-    print(f"Epoch {t+1}\n-------------------------------")
+    print(f"Epoch {t + 1}\n-------------------------------")
     train(train_dataloader, model, loss_fn, optimizer)
 print("Done!")
 
diff --git a/examples/cpu/llm/inference/distributed/run_generation_with_deepspeed.py b/examples/cpu/llm/inference/distributed/run_generation_with_deepspeed.py
index ecf8eea86..ccad56982 100644
--- a/examples/cpu/llm/inference/distributed/run_generation_with_deepspeed.py
+++ b/examples/cpu/llm/inference/distributed/run_generation_with_deepspeed.py
@@ -1017,7 +1017,7 @@ def trace_handler(prof):
     generated, _ = generate()
     t_generate_span = time.time() - t_generate_start
     for i, o, _ in generated:
-        print_rank0(f"{'-'*60}\nin={i}\nout={o}\n")
+        print_rank0(f"{'-' * 60}\nin={i}\nout={o}\n")
 
 # benchmark it!
 else:
diff --git a/intel_extension_for_pytorch/__init__.py b/intel_extension_for_pytorch/__init__.py
index 826562117..f1d577d91 100644
--- a/intel_extension_for_pytorch/__init__.py
+++ b/intel_extension_for_pytorch/__init__.py
@@ -1,6 +1,6 @@
 # This Python file uses the following encoding: utf-8
 import re
-import os
+import sys
 import torch
 
 
@@ -33,7 +33,7 @@
         + f"{ipex_version}.*, but PyTorch {torch.__version__} is found. "
         + "Please switch to the matching version and run again."
     )
-    os.exit(127)
+    sys.exit(127)
 
 
 import os