From 088a4b8d41477b691ba4925d460ae27366025968 Mon Sep 17 00:00:00 2001
From: Rogdham <3994389+Rogdham@users.noreply.github.com>
Date: Mon, 7 Jul 2025 13:06:12 +0200
Subject: [PATCH] Fix Protocol inheritance in _zstdfile (#14232)

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

diff --git a/stdlib/compression/zstd/_zstdfile.pyi b/stdlib/compression/zstd/_zstdfile.pyi
index 045b2d35a..e67b3d992 100644
--- a/stdlib/compression/zstd/_zstdfile.pyi
+++ b/stdlib/compression/zstd/_zstdfile.pyi
@@ -3,7 +3,7 @@ from collections.abc import Mapping
 from compression._common import _streams
 from compression.zstd import ZstdDict
 from io import TextIOWrapper, _WrappedBuffer
-from typing import Literal, overload, type_check_only
+from typing import Literal, Protocol, overload, type_check_only
 from typing_extensions import TypeAlias
 
 from _zstd import ZstdCompressor, _ZstdCompressorFlushBlock, _ZstdCompressorFlushFrame
@@ -16,11 +16,11 @@ _ReadTextMode: TypeAlias = Literal["rt"]
 _WriteTextMode: TypeAlias = Literal["wt", "xt", "at"]
 
 @type_check_only
-class _FileBinaryRead(_streams._Reader):
+class _FileBinaryRead(_streams._Reader, Protocol):
     def close(self) -> None: ...
 
 @type_check_only
-class _FileBinaryWrite(SupportsWrite[bytes]):
+class _FileBinaryWrite(SupportsWrite[bytes], Protocol):
     def close(self) -> None: ...
 
 class ZstdFile(_streams.BaseStream):