From b0bf9ccb3fc881232e5284b06338f9263f3135b1 Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Mon, 3 Jan 2022 12:59:55 +0300
Subject: [PATCH] bpo-46239: improve error message when importing
 `asyncio.windows_events`

---
 Lib/asyncio/windows_events.py                                | 5 +++++
 .../next/Library/2022-01-03-12-59-20.bpo-46239.ySVSEy.rst    | 2 ++
 2 files changed, 7 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-01-03-12-59-20.bpo-46239.ySVSEy.rst

diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py
index 5e7cd795895d65..da81ab435b9a6f 100644
--- a/Lib/asyncio/windows_events.py
+++ b/Lib/asyncio/windows_events.py
@@ -1,5 +1,10 @@
 """Selector and proactor event loops for Windows."""
 
+import sys
+
+if sys.platform != 'win32':  # pragma: no cover
+    raise ImportError('win32 only')
+
 import _overlapped
 import _winapi
 import errno
diff --git a/Misc/NEWS.d/next/Library/2022-01-03-12-59-20.bpo-46239.ySVSEy.rst b/Misc/NEWS.d/next/Library/2022-01-03-12-59-20.bpo-46239.ySVSEy.rst
new file mode 100644
index 00000000000000..202febf84fd109
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-01-03-12-59-20.bpo-46239.ySVSEy.rst
@@ -0,0 +1,2 @@
+Improve error message when importing :mod:`asyncio.windows_events` on
+non-Windows.