From 3688e65c8d54f1b2122bb4c02f8ac68d6dfd1d48 Mon Sep 17 00:00:00 2001
From: boulea7 <zln1905391059@163.com>
Date: Thu, 13 Aug 2026 12:20:03 +0800
Subject: [PATCH] Restore Popen stream types

---
 stdlib/subprocess.pyi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/stdlib/subprocess.pyi b/stdlib/subprocess.pyi
index c191f0e35de9..0790069c115c 100644
--- a/stdlib/subprocess.pyi
+++ b/stdlib/subprocess.pyi
@@ -1030,9 +1030,9 @@ class CalledProcessError(SubprocessError):
 
 class Popen(Generic[AnyStr]):
     args: _CMD
-    stdin: IO[Any] | None
-    stdout: IO[Any] | None
-    stderr: IO[Any] | None
+    stdin: IO[AnyStr] | None
+    stdout: IO[AnyStr] | None
+    stderr: IO[AnyStr] | None
     pid: int
     returncode: int | MaybeNone
     universal_newlines: bool