diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py
index 8a7728edd..b5e132f0e 100644
--- a/fastapi/dependencies/utils.py
+++ b/fastapi/dependencies/utils.py
@@ -1,8 +1,8 @@
 import inspect
+import types
 from contextlib import AsyncExitStack, contextmanager
 from copy import copy, deepcopy
 from dataclasses import dataclass
-import types
 from typing import (
     Any,
     Callable,
diff --git a/tests/test_none_passed_when_null_received.py b/tests/test_none_passed_when_null_received.py
index 883ba9518..f4e171202 100644
--- a/tests/test_none_passed_when_null_received.py
+++ b/tests/test_none_passed_when_null_received.py
@@ -1,8 +1,8 @@
-from typing import Optional, Union, Annotated
+from typing import Annotated, Optional, Union
 
-from fastapi import FastAPI, Body
-from fastapi.testclient import TestClient
 import pytest
+from fastapi import Body, FastAPI
+from fastapi.testclient import TestClient
 
 app = FastAPI()
 DEFAULT = 1234567890
@@ -20,7 +20,7 @@ def api2(integer_or_null: Annotated[Optional[int], Body(embed=True)] = DEFAULT)
 
 @app.post("/api3")
 def api3(
-    integer_or_null: Annotated[Union[int, None], Body(embed=True)] = DEFAULT
+    integer_or_null: Annotated[Union[int, None], Body(embed=True)] = DEFAULT,
 ) -> dict:
     return {"received": integer_or_null}