diff --git a/pilot/embedding_engine/loader/csv_loader.py b/pilot/embedding_engine/loader/csv_loader.py
index bdb58112e..c1b4ea7cb 100644
--- a/pilot/embedding_engine/loader/csv_loader.py
+++ b/pilot/embedding_engine/loader/csv_loader.py
@@ -25,11 +25,11 @@ from langchain.schema import Document
 
 class NewCSVLoader(BaseLoader):
     def __init__(
-            self,
-            file_path: str,
-            source_column: Optional[str] = None,
-            csv_args: Optional[Dict] = None,
-            encoding: Optional[str] = None,
+        self,
+        file_path: str,
+        source_column: Optional[str] = None,
+        csv_args: Optional[Dict] = None,
+        encoding: Optional[str] = None,
     ):
         """
 
diff --git a/tests/unit/embedding_engine/document_test.py b/tests/unit/embedding_engine/document_test.py
index 54c764afd..bf8254bf9 100644
--- a/tests/unit/embedding_engine/document_test.py
+++ b/tests/unit/embedding_engine/document_test.py
@@ -12,9 +12,10 @@ vector_store_config = {
 # it can be .md,.pdf,.docx, .csv, .html
 document_path = "your_path/test.md"
 embedding_engine = EmbeddingEngine(
-                    knowledge_source=document_path,
-                    knowledge_type=KnowledgeType.DOCUMENT.value,
-                    model_name=embedding_model,
-                    vector_store_config=vector_store_config)
+    knowledge_source=document_path,
+    knowledge_type=KnowledgeType.DOCUMENT.value,
+    model_name=embedding_model,
+    vector_store_config=vector_store_config,
+)
 # embedding document content to vector store
-embedding_engine.knowledge_embedding()
\ No newline at end of file
+embedding_engine.knowledge_embedding()