diff --git a/README-zh.md b/README-zh.md
index afadb941..cfe3fbc0 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -125,7 +125,7 @@ def main():
         # Initialize RAG instance
         rag = await initialize_rag()
 		    rag.insert("Your text")
-  
+
         # Perform hybrid search
         mode="hybrid"
         print(
@@ -821,7 +821,7 @@ rag = LightRAG(
   create INDEX CONCURRENTLY entity_idx_node_id ON dickens."Entity" (ag_catalog.agtype_access_operator(properties, '"node_id"'::agtype));
   CREATE INDEX CONCURRENTLY entity_node_id_gin_idx ON dickens."Entity" using gin(properties);
   ALTER TABLE dickens."DIRECTED" CLUSTER ON directed_sid_idx;
-  
+
   -- 如有必要可以删除
   drop INDEX entity_p_idx;
   drop INDEX vertex_p_idx;
diff --git a/README.md b/README.md
index 39bdc269..2e6f478f 100644
--- a/README.md
+++ b/README.md
@@ -161,7 +161,7 @@ def main():
         # Initialize RAG instance
         rag = await initialize_rag()
 		    rag.insert("Your text")
-  
+
         # Perform hybrid search
         mode="hybrid"
         print(
@@ -842,7 +842,7 @@ For production level scenarios you will most likely want to leverage an enterpri
   create INDEX CONCURRENTLY entity_idx_node_id ON dickens."Entity" (ag_catalog.agtype_access_operator(properties, '"node_id"'::agtype));
   CREATE INDEX CONCURRENTLY entity_node_id_gin_idx ON dickens."Entity" using gin(properties);
   ALTER TABLE dickens."DIRECTED" CLUSTER ON directed_sid_idx;
-  
+
   -- drop if necessary
   drop INDEX entity_p_idx;
   drop INDEX vertex_p_idx;
diff --git a/examples/lightrag_openai_demo.py b/examples/lightrag_openai_demo.py
index 42a37d27..24e0257c 100644
--- a/examples/lightrag_openai_demo.py
+++ b/examples/lightrag_openai_demo.py
@@ -124,7 +124,8 @@ async def main():
         print("=====================")
         print(
             await rag.aquery(
-                "What are the top themes in this story?", param=QueryParam(mode="global")
+                "What are the top themes in this story?",
+                param=QueryParam(mode="global"),
             )
         )
 
@@ -134,7 +135,8 @@ async def main():
         print("=====================")
         print(
             await rag.aquery(
-                "What are the top themes in this story?", param=QueryParam(mode="hybrid")
+                "What are the top themes in this story?",
+                param=QueryParam(mode="hybrid"),
             )
         )
     except Exception as e: