From 55f65bd0ca19f85d50b320b8952a6642ae523e47 Mon Sep 17 00:00:00 2001
From: Nick Pope <nick@nickpope.me.uk>
Date: Mon, 12 May 2025 13:21:12 +0100
Subject: [PATCH] Make stubtest ignore `__slotnames__`

This is a cached list of names of slots added by the `copyreg` module.

See https://github.com/typeddjango/django-stubs/pull/2584 for a case of
these cropping up in `django-stubs`.
---
 mypy/stubtest.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mypy/stubtest.py b/mypy/stubtest.py
index 39b27a1f1ed3..f9e6f7d337be 100644
--- a/mypy/stubtest.py
+++ b/mypy/stubtest.py
@@ -1541,6 +1541,7 @@ def verify_typealias(
         "__getinitargs__",
         "__reduce_ex__",
         "__reduce__",
+        "__slotnames__",  # Cached names of slots added by `copyreg` module.
         # ctypes weirdness
         "__ctype_be__",
         "__ctype_le__",