diff --git a/litellm/batches/batch_utils.py b/litellm/batches/batch_utils.py
index 468a0c63eae..240ed048b63 100644
--- a/litellm/batches/batch_utils.py
+++ b/litellm/batches/batch_utils.py
@@ -449,7 +449,9 @@ def _provider_output_file_id(output_file_id: str) -> str:
 
 async def _fetch_batch_managed_file_content(
     file_id: str,
-    custom_llm_provider: Literal["openai", "azure", "vertex_ai", "hosted_vllm", "anthropic", "bedrock", "mistral"] = "openai",
+    custom_llm_provider: Literal[
+        "openai", "azure", "vertex_ai", "hosted_vllm", "anthropic", "bedrock", "mistral"
+    ] = "openai",
     litellm_params: dict | None = None,
 ) -> bytes:
     """
@@ -479,7 +481,9 @@ async def _fetch_batch_managed_file_content(
 
 async def _fetch_batch_output_file_content(
     batch: Batch,
-    custom_llm_provider: Literal["openai", "azure", "vertex_ai", "hosted_vllm", "anthropic", "bedrock", "mistral"] = "openai",
+    custom_llm_provider: Literal[
+        "openai", "azure", "vertex_ai", "hosted_vllm", "anthropic", "bedrock", "mistral"
+    ] = "openai",
     litellm_params: dict | None = None,
 ) -> bytes:
     """