diff --git a/fastapi/_compat/v1.py b/fastapi/_compat/v1.py
index 7f10293fb..c080f9104 100644
--- a/fastapi/_compat/v1.py
+++ b/fastapi/_compat/v1.py
@@ -349,6 +349,7 @@ def create_body_model(
 def get_model_fields(model: Type[BaseModel]) -> List[ModelField]:
     return list(model.__fields__.values())  # type: ignore[attr-defined]
 
+
 def omit_by_default(field_info: FieldInfo) -> FieldInfo:
     """add a wrap validator to omit invalid values by default."""
     raise NotImplementedError("This function is a placeholder in Pydantic v1.")