From 456cc1fede445cb3a8054e66238ebd125367d3f1 Mon Sep 17 00:00:00 2001
From: soreavis <263610811+soreavis@users.noreply.github.com>
Date: Sun, 19 Jul 2026 17:31:59 +0200
Subject: [PATCH] gh-62534: Document that three-argument type() does not call
 __prepare__ (GH-154028)

The three-argument form of type() skips the metaclass __prepare__
method, which is called by the class statement machinery rather than
by the metaclass call itself. Say so in the type() entry and point to
types.new_class() for dynamic class creation with the appropriate
metaclass, as directed in the issue thread.
(cherry picked from commit 5625b187ab528e10dcaa21726a7c95b110d97190)

Co-authored-by: soreavis <263610811+soreavis@users.noreply.github.com>
---
 Doc/library/functions.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index e7655449154a185..a42d0f338577f52 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -2091,6 +2091,11 @@ are always available.  They are listed here in alphabetical order.
    in the same way that keywords in a class
    definition (besides *metaclass*) would.
 
+   Unlike a :keyword:`class` statement, the three argument form does not
+   call the metaclass ``__prepare__`` method (see :ref:`prepare`).  Use
+   :func:`types.new_class` to dynamically create a class using the
+   appropriate metaclass.
+
    See also :ref:`class-customization`.
 
    .. versionchanged:: 3.6