From c8f324298d16e23f082cc8d61b2fc7bde133dc74 Mon Sep 17 00:00:00 2001
From: Kai Lautaportti <kai.lautaportti@gmail.com>
Date: Tue, 25 Oct 2016 10:46:33 -0700
Subject: [PATCH] Added typing for `os.cpu_count()` (#628)

---
 stdlib/3/os/__init__.pyi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stdlib/3/os/__init__.pyi b/stdlib/3/os/__init__.pyi
index 01ced81d0..8a8ce6198 100644
--- a/stdlib/3/os/__init__.pyi
+++ b/stdlib/3/os/__init__.pyi
@@ -371,3 +371,6 @@ if sys.version_info >= (3, 3):
               onerror: Callable = ..., *, follow_symlinks: bool = ...,
               dir_fd: int = ...) -> Iterator[Tuple[AnyStr, List[AnyStr],
                                              List[AnyStr], int]]: ...  # Unix only
+
+if sys.version_info >= (3, 4):
+    def cpu_count() -> Optional[int]: ...