From b5666d473d0cd77bd5692c2f3a8d8d08cec2615a Mon Sep 17 00:00:00 2001
From: Akuli <akuviljanen17@gmail.com>
Date: Tue, 4 Jan 2022 22:04:33 +0200
Subject: [PATCH] Improve comments of builtins.function (#6818)

---
 stdlib/builtins.pyi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/stdlib/builtins.pyi b/stdlib/builtins.pyi
index f1c1b864f..5547afc21 100644
--- a/stdlib/builtins.pyi
+++ b/stdlib/builtins.pyi
@@ -764,10 +764,10 @@ class tuple(Sequence[_T_co], Generic[_T_co]):
     if sys.version_info >= (3, 9):
         def __class_getitem__(cls, __item: Any) -> GenericAlias: ...
 
-# Make sure this class definition stays roughly in line with `types.FunctionType`
+# Doesn't exist at runtime, but deleting this breaks mypy. See #2999
 @final
 class function:
-    # TODO not defined in builtins!
+    # Make sure this class definition stays roughly in line with `types.FunctionType`
     __closure__: tuple[_Cell, ...] | None
     __code__: CodeType
     __defaults__: tuple[Any, ...] | None