From bad2fea551d7a98a75bf8150d8799b0a36d6e787 Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Tue, 8 Jun 2021 13:25:41 +0200
Subject: [PATCH] Use Literal for MatchSingleton (#5590)

---
 stdlib/_ast.pyi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/stdlib/_ast.pyi b/stdlib/_ast.pyi
index 2d0d92d83..eee5b55f0 100644
--- a/stdlib/_ast.pyi
+++ b/stdlib/_ast.pyi
@@ -1,6 +1,7 @@
 import sys
 import typing
 from typing import Any, ClassVar, Optional
+from typing_extensions import Literal
 
 PyCF_ONLY_AST: int
 if sys.version_info >= (3, 8):
@@ -390,7 +391,7 @@ if sys.version_info >= (3, 10):
     class MatchValue(pattern):
         value: expr
     class MatchSingleton(pattern):
-        value: Optional[bool]
+        value: Literal[True, False, None]
     class MatchSequence(pattern):
         patterns: typing.List[pattern]
     class MatchStar(pattern):