Add `__slots__` to `typing._NotIterable` (GH-92570)

(cherry picked from commit eef47d5bc79469c2d5328d6f5a9732e44a49dd5a)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

diff --git a/Lib/typing.py b/Lib/typing.py
index 46ef2d9cf60056e33dbbba291b782996bb908145..d75203e7e06c327d25b48d64edc0b121740f0858 100644 (file)
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -417,6 +417,7 @@ class _NotIterable:
     is treated specially.
     """
 
+    __slots__ = ()
     __iter__ = None