diff --git a/litellm/router.py b/litellm/router.py
index be029dbd089..d0f911bfdc3 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -57,20 +57,20 @@ class Router(_RouterSurface):
 
     if not TYPE_CHECKING:
 
-        def __init__(self, *args, **kwargs):  # kwargs-ok: forwards PythonRouter.__init__'s signature
+        def __init__(self, *args, **kwargs) -> None:  # kwargs-ok: forwards PythonRouter.__init__'s signature
             object.__setattr__(self, "backend", select_backend(args, kwargs))
 
         __init__.__signature__ = inspect.signature(PythonRouter.__init__)
 
-        def __getattr__(self, name):
+        def __getattr__(self, name: str) -> object:
             if name == "backend":
                 raise AttributeError(name)
             return getattr(self.backend, name)
 
-        def __setattr__(self, name, value):
+        def __setattr__(self, name: str, value: object) -> None:
             setattr(self.backend, name, value)
 
-        def __delattr__(self, name):
+        def __delattr__(self, name: str) -> None:
             delattr(self.backend, name)
 
 
diff --git a/litellm/router_backends/python_router.py b/litellm/router_backends/python_router.py
index cf66dab37ed..9263414877d 100644
--- a/litellm/router_backends/python_router.py
+++ b/litellm/router_backends/python_router.py
@@ -3559,8 +3559,8 @@ class PythonRouter:
                 self._ageneric_api_call_with_fallbacks_responses_attempt
             )
             if e.generated_content and not e.is_pre_first_chunk:
-                initial_kwargs["input"] = (
-                    PythonRouter._build_responses_continuation_input(  # rebind-ok: fallback hop input
+                initial_kwargs["input"] = (  # rebind-ok: fallback hop input
+                    PythonRouter._build_responses_continuation_input(
                         initial_kwargs.get("input"),
                         e.generated_content,
                     )