From 10a5b070ab29458ce9306fd67883af56d912f174 Mon Sep 17 00:00:00 2001
From: Andreas Poehlmann <andreas@poehlmann.io>
Date: Fri, 7 Aug 2020 02:26:54 +0200
Subject: [PATCH] Fix contextlib.ContextDecorator.__call__ types (#4399)

The decorated function returned by ContextDecorator.__call__ has
the same call signature as the original function.

Closes #4382.
---
 stdlib/2and3/contextlib.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/2and3/contextlib.pyi b/stdlib/2and3/contextlib.pyi
index 404c7f0a3..c747ab547 100644
--- a/stdlib/2and3/contextlib.pyi
+++ b/stdlib/2and3/contextlib.pyi
@@ -64,7 +64,7 @@ if sys.version_info >= (3, 5):
 
 if sys.version_info >= (3,):
     class ContextDecorator:
-        def __call__(self, func: Callable[..., None]) -> Callable[..., ContextManager[None]]: ...
+        def __call__(self, func: _F) -> _F: ...
     _U = TypeVar("_U", bound=ExitStack)
     class ExitStack(ContextManager[ExitStack]):
         def __init__(self) -> None: ...