From e7880085a2aecb8d894b6b51b5757505414058ef Mon Sep 17 00:00:00 2001
From: Pavel Karateev <lancelote.du.lac@gmail.com>
Date: Sun, 23 May 2021 15:25:32 +0300
Subject: [PATCH] Add sys.stdlib_module_names for Python 3.10 (#5523)

---
 stdlib/sys.pyi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stdlib/sys.pyi b/stdlib/sys.pyi
index d431d2733..a0df1ff6a 100644
--- a/stdlib/sys.pyi
+++ b/stdlib/sys.pyi
@@ -8,6 +8,7 @@ from typing import (
     AsyncGenerator,
     Callable,
     Dict,
+    FrozenSet,
     List,
     NoReturn,
     Optional,
@@ -74,6 +75,8 @@ ps2: str
 stdin: TextIO
 stdout: TextIO
 stderr: TextIO
+if sys.version_info >= (3, 10):
+    stdlib_module_names: FrozenSet[str]
 __stdin__: TextIO
 __stdout__: TextIO
 __stderr__: TextIO