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merged 2 commits into from
Oct 22, 2023
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gh-109975: What's new in 3.13: Add module headers to removals and sort #110994

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ea2eda2
Add module headers to removals and sort
hugovk Oct 17, 2023
3891e21
Move C API removal to correct section
hugovk Oct 17, 2023
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173 changes: 107 additions & 66 deletions Doc/whatsnew/3.13.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -813,37 +813,80 @@ PEP 594: dead batteries
* :mod:`!xdrlib`.
(Contributed by Victor Stinner in :gh:`104773`.)

* Remove support for the keyword-argument method of creating
:class:`typing.TypedDict` types, deprecated in Python 3.11.
(Contributed by Tomas Roun in :gh:`104786`.)

2to3
----

* Remove the ``2to3`` program and the :mod:`!lib2to3` module,
deprecated in Python 3.11.
(Contributed by Victor Stinner in :gh:`104780`.)

* Namespaces ``typing.io`` and ``typing.re``, deprecated in Python 3.8,
are now removed. The items in those namespaces can be imported directly
from :mod:`typing`. (Contributed by Sebastian Rittau in :gh:`92871`.)

* Remove the untested and undocumented :mod:`webbrowser` :class:`!MacOSX` class,
deprecated in Python 3.11.
Use the :class:`!MacOSXOSAScript` class (introduced in Python 3.2) instead.
(Contributed by Hugo van Kemenade in :gh:`104804`.)

* Remove support for using :class:`pathlib.Path` objects as context managers.
This functionality was deprecated and made a no-op in Python 3.9.
configparser
------------

* Remove the undocumented :class:`!configparser.LegacyInterpolation` class,
deprecated in the docstring since Python 3.2,
and with a deprecation warning since Python 3.11.
(Contributed by Hugo van Kemenade in :gh:`104886`.)

locale
------

* Remove ``locale.resetlocale()`` function deprecated in Python 3.11:
use ``locale.setlocale(locale.LC_ALL, "")`` instead.
(Contributed by Victor Stinner in :gh:`104783`.)

logging
-------

* :mod:`logging`: Remove undocumented and untested ``Logger.warn()`` and
``LoggerAdapter.warn()`` methods and ``logging.warn()`` function. Deprecated
since Python 3.3, they were aliases to the :meth:`logging.Logger.warning`
method, :meth:`!logging.LoggerAdapter.warning` method and
:func:`logging.warning` function.
(Contributed by Victor Stinner in :gh:`105376`.)

pathlib
-------

* Remove support for using :class:`pathlib.Path` objects as context managers.
This functionality was deprecated and made a no-op in Python 3.9.

re
--

* Remove undocumented, never working, and deprecated ``re.template`` function
and ``re.TEMPLATE`` flag (and ``re.T`` alias).
(Contributed by Serhiy Storchaka and Nikita Sobolev in :gh:`105687`.)

tkinter
-------

* Remove the :mod:`!tkinter.tix` module, deprecated in Python 3.6. The
third-party Tix library which the module wrapped is unmaintained.
(Contributed by Zachary Ware in :gh:`75552`.)

turtle
------

* Remove the :meth:`!turtle.RawTurtle.settiltangle` method,
deprecated in docs since Python 3.1
and with a deprecation warning since Python 3.11.
(Contributed by Hugo van Kemenade in :gh:`104876`.)

typing
------

* Namespaces ``typing.io`` and ``typing.re``, deprecated in Python 3.8,
are now removed. The items in those namespaces can be imported directly
from :mod:`typing`. (Contributed by Sebastian Rittau in :gh:`92871`.)

* Remove support for the keyword-argument method of creating
:class:`typing.TypedDict` types, deprecated in Python 3.11.
(Contributed by Tomas Roun in :gh:`104786`.)

unittest
--------

* Removed the following :mod:`unittest` functions, deprecated in Python 3.11:

* :func:`!unittest.findTestCases`
Expand All @@ -862,26 +905,8 @@ PEP 594: dead batteries
method, deprecated in Python 3.11.
(Contributed by Hugo van Kemenade in :gh:`104992`.)

* Remove the :mod:`!tkinter.tix` module, deprecated in Python 3.6. The
third-party Tix library which the module wrapped is unmaintained.
(Contributed by Zachary Ware in :gh:`75552`.)

* Remove the old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and
``Py_TRASHCAN_SAFE_END``. They should be replaced by the new macros
``Py_TRASHCAN_BEGIN`` and ``Py_TRASHCAN_END``. The new macros were
added in Python 3.8 and the old macros were deprecated in Python 3.11.
(Contributed by Irit Katriel in :gh:`105111`.)

* Remove ``locale.resetlocale()`` function deprecated in Python 3.11:
use ``locale.setlocale(locale.LC_ALL, "")`` instead.
(Contributed by Victor Stinner in :gh:`104783`.)

* :mod:`logging`: Remove undocumented and untested ``Logger.warn()`` and
``LoggerAdapter.warn()`` methods and ``logging.warn()`` function. Deprecated
since Python 3.3, they were aliases to the :meth:`logging.Logger.warning`
method, :meth:`!logging.LoggerAdapter.warning` method and
:func:`logging.warning` function.
(Contributed by Victor Stinner in :gh:`105376`.)
urllib
------

* Remove *cafile*, *capath* and *cadefault* parameters of the
:func:`urllib.request.urlopen` function, deprecated in Python 3.6: use the
Expand All @@ -891,50 +916,31 @@ PEP 594: dead batteries
certificates for you.
(Contributed by Victor Stinner in :gh:`105382`.)

webbrowser
----------

* Remove the untested and undocumented :mod:`webbrowser` :class:`!MacOSX` class,
deprecated in Python 3.11.
Use the :class:`!MacOSXOSAScript` class (introduced in Python 3.2) instead.
(Contributed by Hugo van Kemenade in :gh:`104804`.)

* Remove deprecated ``webbrowser.MacOSXOSAScript._name`` attribute.
Use :attr:`webbrowser.MacOSXOSAScript.name <webbrowser.controller.name>`
attribute instead.
(Contributed by Nikita Sobolev in :gh:`105546`.)

* Remove undocumented, never working, and deprecated ``re.template`` function
and ``re.TEMPLATE`` flag (and ``re.T`` alias).
(Contributed by Serhiy Storchaka and Nikita Sobolev in :gh:`105687`.)
Others
------

* None yet

Porting to Python 3.13
======================

This section lists previously described changes and other bugfixes
that may require changes to your code.

* The old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and ``Py_TRASHCAN_SAFE_END``
were removed. They should be replaced by the new macros ``Py_TRASHCAN_BEGIN``
and ``Py_TRASHCAN_END``.

A tp_dealloc function that has the old macros, such as::

static void
mytype_dealloc(mytype *p)
{
PyObject_GC_UnTrack(p);
Py_TRASHCAN_SAFE_BEGIN(p);
...
Py_TRASHCAN_SAFE_END
}

should migrate to the new macros as follows::

static void
mytype_dealloc(mytype *p)
{
PyObject_GC_UnTrack(p);
Py_TRASHCAN_BEGIN(p, mytype_dealloc)
...
Py_TRASHCAN_END
}

Note that ``Py_TRASHCAN_BEGIN`` has a second argument which
should be the deallocation function it is in.
* None yet


Build Changes
Expand Down Expand Up @@ -1130,6 +1136,35 @@ Porting to Python 3.13
are now undefined by ``<Python.h>``.
(Contributed by Victor Stinner in :gh:`85283`.)

* The old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and ``Py_TRASHCAN_SAFE_END``
were removed. They should be replaced by the new macros ``Py_TRASHCAN_BEGIN``
and ``Py_TRASHCAN_END``.

A tp_dealloc function that has the old macros, such as::

static void
mytype_dealloc(mytype *p)
{
PyObject_GC_UnTrack(p);
Py_TRASHCAN_SAFE_BEGIN(p);
...
Py_TRASHCAN_SAFE_END
}

should migrate to the new macros as follows::

static void
mytype_dealloc(mytype *p)
{
PyObject_GC_UnTrack(p);
Py_TRASHCAN_BEGIN(p, mytype_dealloc)
...
Py_TRASHCAN_END
}

Note that ``Py_TRASHCAN_BEGIN`` has a second argument which
should be the deallocation function it is in.

* The :c:func:`PyUnicode_AsUTF8` function now raises an exception if the string
contains embedded null characters. To accept embedded null characters and
truncate on purpose at the first null byte,
Expand Down Expand Up @@ -1264,6 +1299,12 @@ Removed
Configuration <init-config>` instead (:pep:`587`), added to Python 3.8.
(Contributed by Victor Stinner in :gh:`105145`.)

* Remove the old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN`` and
``Py_TRASHCAN_SAFE_END``. They should be replaced by the new macros
``Py_TRASHCAN_BEGIN`` and ``Py_TRASHCAN_END``. The new macros were
added in Python 3.8 and the old macros were deprecated in Python 3.11.
(Contributed by Irit Katriel in :gh:`105111`.)

* Remove ``PyEval_InitThreads()`` and ``PyEval_ThreadsInitialized()``
functions, deprecated in Python 3.9. Since Python 3.7, ``Py_Initialize()``
always creates the GIL: calling ``PyEval_InitThreads()`` did nothing and
Expand Down