==================================================
PyPy v7.3.12: release of python 2.7, 3.9, and 3.10
==================================================

..
       Changelog up to commit 4cdff7fe8066

.. note_::
  This is a pre-release announcement. When the release actually happens, it
  will be announced on the `PyPy blog`_

.. _`PyPy blog`: https://pypy.org/blog

The PyPy team is proud to release version 7.3.12 of PyPy. 
There are only minimal bugfixes since the last release. We did implement
support for symlinks in Windows, and are releasing a Python3.10 version.
The release includes three different interpreters:

  - PyPy2.7, which is an interpreter supporting the syntax and the features of
    Python 2.7 including the stdlib for CPython 2.7.18+ (the ``+`` is for
    backported security updates)

  - PyPy3.9, which is an interpreter supporting the syntax and the features of
    Python 3.9, including the stdlib for CPython 3.9.16.

  - PyPy3.10, which is an interpreter supporting the syntax and the features of
    Python 3.10, including the stdlib for CPython 3.10.11. This is our first
    release of 3.10, but based on past experience we are quite confident in
    its compatibility with upstream. Of course, we recommend testing your code
    with this new version before putting it into production. Note it does
    require a new version of cython that has yet to be released.

The interpreters are based on much the same codebase, thus the multiple
release. This is a micro release, all APIs are compatible with the other 7.3
releases. It follows after 7.3.11 release on Dec 29, 2022

We recommend updating. You can find links to download the v7.3.12 releases here:

    https://pypy.org/download.html

We would like to thank our donors for the continued support of the PyPy
project. If PyPy is not quite good enough for your needs, we are available for
`direct consulting`_ work. If PyPy is helping you out, we would love to hear about
it and encourage submissions to our blog_ via a pull request
to https://github.com/pypy/pypy.org

We would also like to thank our contributors and encourage new people to join
the project. PyPy has many layers and we need help with all of them: bug fixes,
`PyPy`_ and `RPython`_ documentation improvements, or general `help`_ with making
RPython's JIT even better. Since the previous release, we have accepted
contributions from one new contributor, thanks for pitching in, and welcome
to the project!

If you are a python library maintainer and use C-extensions, please consider
making a HPy_ / CFFI_ / cppyy_ version of your library that would be performant
on PyPy. In any case, both `cibuildwheel`_ and the `multibuild system`_ support
building wheels for PyPy.

.. _`PyPy`: index.html
.. _`RPython`: https://rpython.readthedocs.org
.. _`help`: project-ideas.html
.. _CFFI: https://cffi.readthedocs.io
.. _cppyy: https://cppyy.readthedocs.io
.. _`multibuild system`: https://github.com/matthew-brett/multibuild
.. _`cibuildwheel`: https://github.com/joerick/cibuildwheel
.. _blog: https://pypy.org/blog
.. _HPy: https://hpyproject.org/
.. _was sponsored: https://www.pypy.org/posts/2022/07/m1-support-for-pypy.html
.. _direct consulting: https://www.pypy.org/pypy-sponsors.html
.. _has built: https://www.pypy.org/posts/2022/11/pypy-and-conda-forge.html

What is PyPy?
=============

PyPy is a Python interpreter, a drop-in replacement for CPython
It's fast (`PyPy and CPython 3.7.4`_ performance
comparison) due to its integrated tracing JIT compiler.

We also welcome developers of other `dynamic languages`_ to see what RPython
can do for them.

We provide binary builds for:

  * **x86** machines on most common operating systems
    (Linux 32/64 bits, Mac OS 64 bits, Windows 64 bits)

  * 64-bit **ARM** machines running Linux (``aarch64``).

  * Apple **M1 arm64** machines (``macos_arm64``). 

  * **s390x** running Linux

PyPy support Windows 32-bit, Linux PPC64 big- and little-endian, and Linux ARM
32 bit, but does not release binaries. Please reach out to us if you wish to
sponsor binary releases for those platforms. Downstream packagers provide
binary builds for debian, Fedora, conda, OpenBSD, FreeBSD, Gentoo, and more.

.. _`PyPy and CPython 3.7.4`: https://speed.pypy.org
.. _`dynamic languages`: https://rpython.readthedocs.io/en/latest/examples.html

Changelog
=========

For all versions
----------------
- Update vendored version of pycparser
- Update to ssl 1.1.1t, 3.0.8 when embedding libraries

Bugfixes
~~~~~~~~
- Allow creating ``ctypes.py_object()`` on a ``weakref`` (issue 3883_)
- Add memory pressure for malloc allocations in ``_ssl``, fix OpenSSL context use
- Pair OpenSSL allocation calls better with free calls in ``_ssl`` (issue 3887_)
- Only define ``SO`` in ``sysconfig`` if ``imp.get_suffixes()`` has
  ``imp.C_EXTENSION``
- Fix wrong assert in ``intutils``, it should be an ``InvalidLoop`` instead
  (issue 3892:_)
- export ``PyDescr_NewGetSet`` and define ``PyDescr_TYPE``, ``PyDescr_NAME``
- ``space.index(W_Bool)`` should return an ``int``, not a ``bool`` (issue 3906_)
- Skip cpython pickling of ``range``
- Support loading c-extension modules with both ``powerpc64le-linux-gnu`` and
  ``ppc_64-linux-gnu`` platform tags (issue 3834_)
- Fix various cases where a mutating ``__index__`` method could crash the
  interpreter (issue 3917_)
- Use C99 ``NAN`` for ``Py_NAN``


Speedups and enhancements
~~~~~~~~~~~~~~~~~~~~~~~~~
- Do less string copies in the bytecode compiler
- Add missing CJK range in unicodedata version 13

Python 3.9+
-----------

Bugfixes
~~~~~~~~
- Fix corner case when computing ``__main__.__file__`` (issue 3881_)
- Fix misnamed function (issue 3874_)
- Disallow pickle of ``staticmethod``, ``classmethod``, and ``DirEntry``
- Make sure that the max stackdepth is observed in method calls
- Fix ``utf-16`` and ``utf-32`` errorhandler replacement logic: if the
  replacement is bytes. those are just copied to the output
- Fix the problems of https://bugs.python.org/issue36819
- Fix ``str_decode_raw_unicode_escape`` for the case of ``\\``, which was
  incorrectly special-cased.
- Forbid null bytes in ``pwd.getpwnam``
- Use ``r_longlong`` math in nanosecond time for ``perf_counter`` on windows
  (issue 3890_)
- Fix for ``tuple.contains(obj)`` using ``item == obj`` (bpo-37648_)
- Allow indexing with a class with a ``__index__`` method
- Implement ``__copy__`` and ``__deepcopy__`` for ``zlib`` (de)compressors
- Fix weirdness about combining annotations and a global declaration of a
  name in some random function (issue 3925_)
- Fix wrong implementation of ``_copy_base`` for slices of n-dimensional
  buffers (issue 3520_)
- Trim the scope ID from IPV6 addresses (issue 3938_, reversing the decision in
  issue 3628_)

Speedups and enhancements
~~~~~~~~~~~~~~~~~~~~~~~~~
- Speed up ``nametuple _replace`` by code generation (issue 3884_)
- Correct exception on positional arguments, while supporting empty namedtuple
  (?) at the same time
- Implement ``os.symlink`` and ``os.readlink`` on windows
- Fix ``os.mkdir`` for unicode handling via teaching rposix about utf-8 paths,
  which could lead to removing the last vestiges of unicode from rpython.
- Refactor ``os.remove``/``os.unlink`` to take symlink into account on windows
- Increment ``macosx-version-min`` to 10.9
- ``space.newlong`` returns a ``W_LongObject`` on pypy3, where there is no
  observable applevel difference between ``W_IntObject`` and ``W_LongObject``
- Provide ``_PyEval_GetAsyncGenFirstiter`` and ``_PyEval_GetAsyncGenFinalizer``
  for use by cython, towards fixing issue 3280_

.. _bpo-37648: https://bugs.python.org/issue37648
.. _GH-100242: https://github.com/python/cpython/issues/100242
.. _3280: https://foss.heptapod.net/pypy/pypy/-/issues/3280
.. _3520: https://foss.heptapod.net/pypy/pypy/-/issues/3520
.. _3628: https://foss.heptapod.net/pypy/pypy/-/issues/3628
.. _3834: https://foss.heptapod.net/pypy/pypy/-/issues/3834
.. _3874: https://foss.heptapod.net/pypy/pypy/-/issues/3874
.. _3881: https://foss.heptapod.net/pypy/pypy/-/issues/3881
.. _3883: https://foss.heptapod.net/pypy/pypy/-/issues/3883
.. _3884: https://foss.heptapod.net/pypy/pypy/-/issues/3884
.. _3887: https://foss.heptapod.net/pypy/pypy/-/issues/3887
.. _3890: https://foss.heptapod.net/pypy/pypy/-/issues/3890
.. _3892: https://foss.heptapod.net/pypy/pypy/-/issues/3892
.. _3906: https://foss.heptapod.net/pypy/pypy/-/issues/3906
.. _3917: https://foss.heptapod.net/pypy/pypy/-/issues/3917
.. _3925: https://foss.heptapod.net/pypy/pypy/-/issues/3925
.. _3938: https://foss.heptapod.net/pypy/pypy/-/issues/3938
