Fix formats in fastapi/utils, fastapi/dependencies/utils

fastapi/dependencies/utils.py

@@ -721,7 +721,7 @@ def get_body_field(*, dependant: Dependant, name: str) -> Optional[ModelField]:
     # That is combined (embedded) with other body fields
     for param in flat_dependant.body_params:
         setattr(param.field_info, "embed", True)
-    model_name = "Body_" + name
+    model_name = f"Body_{name}"
     BodyModel: Type[BaseModel] = create_model(model_name)
     for f in flat_dependant.body_params:
         BodyModel.__fields__[f.name] = f

fastapi/utils.py

@@ -74,11 +74,11 @@ def create_response_field(
 def create_cloned_field(
     field: ModelField,
     *,
-    cloned_types: Optional[Dict[Type[BaseModel], Type[BaseModel]]] = None,
+    cloned_types: Optional[Dict[Type[BaseModel], Type[BaseModel]]] = {},
 ) -> ModelField:
-    # _cloned_types has already cloned types, to support recursive models
-    if cloned_types is None:
-        cloned_types = dict()
+    """
+    _cloned_types has already cloned types, to support recursive models
+    """
     original_type = field.type_
     if is_dataclass(original_type) and hasattr(original_type, "__pydantic_model__"):
         original_type = original_type.__pydantic_model__
@@ -167,7 +167,8 @@ def get_value_or_default(
 
     Otherwise, the first item (a `DefaultPlaceholder`) will be returned.
     """
-    for item in (first_item,) + extra_items:
+    items = (first_item,) + extra_items
+    for item in (first_item,) + items:
         if not isinstance(item, DefaultPlaceholder):
             return item
     return first_item