From 2d10d2779f1d1180af3baba25c1e0f85570caff3 Mon Sep 17 00:00:00 2001
From: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Date: Sun, 2 May 2021 18:50:45 -0700
Subject: [PATCH] multiprocessing.pool: fix ApplyResult.__init__ (#5318)

---
 stdlib/multiprocessing/pool.pyi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/stdlib/multiprocessing/pool.pyi b/stdlib/multiprocessing/pool.pyi
index 40e5ec46f..d8004655c 100644
--- a/stdlib/multiprocessing/pool.pyi
+++ b/stdlib/multiprocessing/pool.pyi
@@ -9,6 +9,12 @@ _S = TypeVar("_S")
 _T = TypeVar("_T")
 
 class ApplyResult(Generic[_T]):
+    def __init__(
+        self,
+        pool: Pool,
+        callback: Optional[Callable[[_T], None]] = ...,
+        error_callback: Optional[Callable[[BaseException], None]] = ...,
+    ) -> None: ...
     def get(self, timeout: Optional[float] = ...) -> _T: ...
     def wait(self, timeout: Optional[float] = ...) -> None: ...
     def ready(self) -> bool: ...