From d39e58c3bc3bf5a2aea603587475f17e4c40aa50 Mon Sep 17 00:00:00 2001
From: Kazushi Kitaya <kazushikitaya@gmail.com>
Date: Wed, 13 May 2020 23:14:42 +0900
Subject: [PATCH] asyncio.subprocess: returncode is Optional (#3981)

---
 stdlib/3/asyncio/subprocess.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/3/asyncio/subprocess.pyi b/stdlib/3/asyncio/subprocess.pyi
index 6bb50ad97..d968a156c 100644
--- a/stdlib/3/asyncio/subprocess.pyi
+++ b/stdlib/3/asyncio/subprocess.pyi
@@ -30,7 +30,7 @@ class Process:
                  protocol: protocols.BaseProtocol,
                  loop: events.AbstractEventLoop) -> None: ...
     @property
-    def returncode(self) -> int: ...
+    def returncode(self) -> Optional[int]: ...
     async def wait(self) -> int: ...
     def send_signal(self, signal: int) -> None: ...
     def terminate(self) -> None: ...