8000 gh-95913: Copyedit/improve Implementation Changes What's New section by CAM-Gerlach · Pull Request #97720 · python/cpython · GitHub
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merged 3 commits into from
Oct 5, 2022
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gh-95913: Copyedit/improve Implementation Changes What's New section #97720

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aa981ba
Add and refine reST/Sphinx syntax for implementation changes section
CAM-Gerlach Oct 2, 2022
52afa4d
Clarify and refine wording in the Implementation Changes section
CAM-Gerlach Oct 2, 2022
701f6cb
Elide unnecessary comma
CAM-Gerlach Oct 4, 2022
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44 changes: 27 additions & 17 deletions Doc/whatsnew/3.11.rst
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Expand Up @@ -471,17 +471,24 @@ Other Language Changes
there is a mixture of strings and bytes keys.
(Contributed by Thomas Grainger in :gh:`91181`.)


.. _whatsnew311-other-implementation-changes:

Other CPython Implementation Changes
====================================

* Special methods :meth:`complex.__complex__` and :meth:`bytes.__bytes__` are implemented to
support :class:`typing.SupportsComplex` and :class:`typing.SupportsBytes` protocols.
* The special methods :meth:`~object.__complex__` for :class:`complex`
and :meth:`~object.__bytes__` for :class:`bytes` are implemented to support
the :class:`typing.SupportsComplex` and :class:`typing.SupportsBytes` protocols.
(Contributed by Mark Dickinson and Dong-hee Na in :issue:`24234`.)

* ``siphash13`` is added as a new internal hashing algorithms. It has similar security
properties as ``siphash24`` but it is slightly faster for long inputs. ``str``, ``bytes``,
and some other types now use it as default algorithm for :func:`hash`. :pep:`552`
hash-based pyc files now use ``siphash13``, too.
* ``siphash13`` is added as a new internal hashing algorithm.
It has similar security properties as ``siphash24``,
but it is slightly faster for long inputs.
:class:`str`, :class:`bytes`, and some other types
now use it as the default algorithm for :func:`hash`.
:pep:`552` :ref:`hash-based .pyc files <pyc-invalidation>`
now use ``siphash13`` too.
(Contributed by Inada Naoki in :issue:`29410`.)

* When an active exception is re-raised by a :keyword:`raise` statement with no parameters,
Expand All @@ -490,25 +497,28 @@ Other CPython Implementation Changes
reflected in the re-raised exception.
(Contributed by Irit Katriel in :issue:`45711`.)

* The interpreter state's representation of handled exceptions (a.k.a exc_info, or
_PyErr_StackItem) now has only the ``exc_value`` field, ``exc_type`` and ``exc_traceback``
have been removed as their values can be derived from ``exc_value``.
* The interpreter state's representation of handled exceptions
(aka ``exc_info`` or ``_PyErr_StackItem``)
now only has the ``exc_value`` field; ``exc_type`` and ``exc_traceback``
have been removed, as they can be derived from ``exc_value``.
(Contributed by Irit Katriel in :issue:`45711`.)

* A new command line option for the Windows installer ``AppendPath`` has been added.
It behaves similiar to ``PrependPath`` but appends the install and scripts directories
instead of prepending them.
* A new :ref:`command line option <install-quiet-option>`, ``AppendPath``,
has been added for the Windows installer.
It behaves similarly to ``PrependPath``,
but appends the install and scripts directories instead of prepending them.
(Contributed by Bastian Neuburger in :issue:`44934`.)

* The :c:member:`PyConfig.module_search_paths_set` field must now be set to 1 for
* The :c:member:`PyConfig.module_search_paths_set` field must now be set to ``1`` for
initialization to use :c:member:`PyConfig.module_search_paths` to initialize
:data:`sys.path`. Otherwise, initialization will recalculate the path and replace
any values added to ``module_search_paths``.

* The output of the :option:`--help` option is changed to fit inside 50 lines and 80
columns. Information about :ref:`Python environment variables <using-on-envvars>`
and :option:`-X options <-X>` is available with the new :option:`--help-env` or
:option:`--help-xoptions` flags, and with :option:`--help-all`.
* The output of the :option:`--help` option now fits in 50 lines/80 columns.
Information about :ref:`Python environment variables <using-on-envvars>`
and :option:`-X` options is now available using the respective
:option:`--help-env` and :option:`--help-xoptions` flags,
and with the new :option:`--help-all`.
(Contributed by Éric Araujo in :issue:`46142`.)


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