From ed5ace87adfcbfb1f72d4c592771a1a0104fc1b2 Mon Sep 17 00:00:00 2001
From: giria660 <giriabishekkumar5@gmail.com>
Date: Thu, 26 Mar 2026 20:31:32 -0400
Subject: [PATCH] Fix mypy builtins lookup in annotation resolution

---
 fastapi/dependencies/utils.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py
index e01e5d3f83..69b9ea18bc 100644
--- a/fastapi/dependencies/utils.py
+++ b/fastapi/dependencies/utils.py
@@ -1,7 +1,7 @@
 import dataclasses
 import inspect
 import sys
-from builtins import __dict__ as builtins_dict
+import builtins
 from collections.abc import (
     AsyncGenerator,
     AsyncIterable,
@@ -245,7 +245,7 @@ def get_typed_signature(call: Callable[..., Any]) -> inspect.Signature:
 
 class _LenientTypeResolutionDict(dict[str, Any]):
     def __missing__(self, key: str) -> Any:
-        value = builtins_dict.get(key, ForwardRef(key))
+        value = vars(builtins).get(key, ForwardRef(key))
         self[key] = value
         return value