diff --git a/dbgpt/serve/flow/service/service.py b/dbgpt/serve/flow/service/service.py
index 1b8a83422..15c9d5ceb 100644
--- a/dbgpt/serve/flow/service/service.py
+++ b/dbgpt/serve/flow/service/service.py
@@ -623,7 +623,6 @@ class Service(BaseService[ServeEntity, ServeRequest, ServerResponse]):
     async def _wrapper_chat_stream_flow_str(
         self, stream_iter: AsyncIterator[ModelOutput]
     ) -> AsyncIterator[str]:
-
         async for output in stream_iter:
             text = output.text
             if text:
diff --git a/dbgpt/serve/flow/service/share_utils.py b/dbgpt/serve/flow/service/share_utils.py
index 99ba222a9..6775c4d4b 100644
--- a/dbgpt/serve/flow/service/share_utils.py
+++ b/dbgpt/serve/flow/service/share_utils.py
@@ -15,7 +15,6 @@ from ..api.schemas import ServeRequest
 
 
 def _generate_dbgpts_zip(package_name: str, flow: ServeRequest) -> io.BytesIO:
-
     zip_buffer = io.BytesIO()
     flow_name = flow.name
     flow_label = flow.label
diff --git a/examples/awel/awel_flow_ui_components.py b/examples/awel/awel_flow_ui_components.py
index 8a1eb04b0..db92ca09d 100644
--- a/examples/awel/awel_flow_ui_components.py
+++ b/examples/awel/awel_flow_ui_components.py
@@ -440,7 +440,6 @@ class ExampleFlowTextAreaOperator(MapOperator[str, str]):
 
 
 class ExampleFlowSliderOperator(MapOperator[float, float]):
-
     metadata = ViewMetadata(
         label="Example Flow Slider",
         name="example_flow_slider",