(Contributed by Inada Naoki in :issue:`33597`)
* :class:`uuid.UUID` now uses ``__slots__`` to reduce its memory footprint.
- Note that this means that instances can no longer be weak-referenced and
- that arbitrary attributes can no longer be added to them.
* The :class:`list` constructor does not overallocate the internal item buffer
if the input iterable has a known length (the input implements ``__len__``).
* The function :func:`math.factorial` no longer accepts arguments that are not
int-like. (Contributed by Pablo Galindo in :issue:`33083`.)
-* :class:`uuid.UUID` now uses ``__slots__``, therefore instances can no longer
- be weak-referenced and attributes can no longer be added.
-
* :mod:`xml.dom.minidom` and :mod:`xml.sax` modules no longer process
external entities by default.
(Contributed by Christian Heimes in :issue:`17239`.)