Issue #24254: Drop cls.__definition_order__.

2 files changed, 3 insertions, 16 deletions

diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst
index ffdeae04e5..4fc6af02f1 100644
--- a/Doc/reference/compound_stmts.rst
+++ b/Doc/reference/compound_stmts.rst
@@ -634,15 +634,9 @@ dictionary.  The class name is bound to this class object in the original local
 namespace.
 
 The order in which attributes are defined in the class body is preserved
-in the ``__definition_order__`` attribute on the new class.  If that order
-is not known then the attribute is set to :const:`None`.  The class body
-may include a ``__definition_order__`` attribute.  In that case it is used
-directly.  The value must be a tuple of identifiers or ``None``, otherwise
-:exc:`TypeError` will be raised when the class statement is executed.
-
-.. versionchanged:: 3.6
-
-   Add ``__definition_order__`` to classes.
+in the new class's ``__dict__``.  Note that this is reliable only right
+after the class is created and only for classes that were defined using
+the definition syntax.
 
 Class creation can be customized heavily using :ref:`metaclasses <metaclasses>`.
 
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 00785ed39c..a0755039f7 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -1752,13 +1752,6 @@ additional keyword arguments, if any, come from the class definition).
 If the metaclass has no ``__prepare__`` attribute, then the class namespace
 is initialised as an empty ordered mapping.
 
-.. impl-detail::
-
-   In CPython the default is :class:`collections.OrderedDict`.
-
-.. versionchanged:: 3.6
-   Defaults to :class:`collections.OrderedDict` instead of :func:`dict`.
-
 .. seealso::
 
    :pep:`3115` - Metaclasses in Python 3000