From a379ccf5f491cb35a5c84b50fccfb27d88f8eefa Mon Sep 17 00:00:00 2001
From: David Brochart <david.brochart@gmail.com>
Date: Mon, 18 Nov 2024 10:55:46 +0100
Subject: [PATCH] Use HasFileno from typeshed

---
 src/anyio/_backends/_selector_thread.py | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/src/anyio/_backends/_selector_thread.py b/src/anyio/_backends/_selector_thread.py
index cfa39ca4..1aff007e 100644
--- a/src/anyio/_backends/_selector_thread.py
+++ b/src/anyio/_backends/_selector_thread.py
@@ -14,6 +14,7 @@
 import threading
 import typing
 from typing import (
+    TYPE_CHECKING,
     Any,
     Callable,
     Union,
@@ -22,14 +23,10 @@
 
 from ._asyncio import find_root_task
 
-if typing.TYPE_CHECKING:
-    from typing_extensions import Protocol
+if TYPE_CHECKING:
+    from _typeshed import HasFileno
 
-    class _HasFileno(Protocol):
-        def fileno(self) -> int:
-            pass
-
-    _FileDescriptorLike = Union[int, _HasFileno]
+    _FileDescriptorLike = HasFileno | int
 
 
 # registry of asyncio loop : selector thread