diff --git a/fastapi/routing.py b/fastapi/routing.py
index b72c4ea1ed..35bad15578 100644
--- a/fastapi/routing.py
+++ b/fastapi/routing.py
@@ -91,6 +91,9 @@ from starlette.routing import Mount as Mount  # noqa
 from starlette.types import AppType, ASGIApp, Lifespan, Receive, Scope, Send
 from starlette.websockets import WebSocket
 from typing_extensions import deprecated
+import inspect
+import weakref
+from typing import Any, TypedDict
 
 
 # Copy of starlette.routing.request_response modified to include the