Add type annotation to global variable

tiangolo · May 12, 2023 · 7184259 · 7184259
1 parent 7b540be
commit 7184259
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/fastapi/utils.py b/fastapi/utils.py
@@ -28,7 +28,9 @@
     from .routing import APIRoute
 
 # Cache for `create_cloned_field`
-_CLONED_TYPES_CACHE = WeakKeyDictionary()
+_CLONED_TYPES_CACHE: MutableMapping[
+    Type[BaseModel], Type[BaseModel]
+] = WeakKeyDictionary()
 
 
 def is_body_allowed_for_status_code(status_code: Union[int, str, None]) -> bool: