• Python 3.12.0 alpha 6 released

    From Thomas Wouters@21:1/5 to All on Tue Mar 7 20:37:55 2023
    I'm pleased to announce the release of Python 3.12 alpha 6.

    https://www.python.org/downloads/release/python-3120a6/


    *This is an early developer preview of Python 3.12.*
    Major new features of the 3.12 series, compared to 3.11

    Python 3.12 is still in development. This release, 3.12.0a6 is the sixth of seven planned alpha releases.

    Alpha releases are intended to make it easier to test the current state of
    new features and bug fixes and to test the release process.

    During the alpha phase, features may be added up until the start of the
    beta phase (2023-05-08) and, if necessary, may be modified or deleted up
    until the release candidate phase (2023-07-31). Please keep in mind that
    this is a preview release and its use is not recommended for production environments.

    Many new features for Python 3.12 are still being planned and written.
    Among the new major new features and changes so far:


    - Even more improved error messages. More exceptions potentially caused
    by typos now make suggestions to the user.
    - Support for the Linux perf profiler to report Python function names in
    traces.
    - The deprecated wstr and wstr_length members of the C implementation of
    unicode objects were removed, per PEP 623
    <https://peps.python.org/pep-0623>.
    - In the unittest module, a number of long deprecated methods and
    classes were removed. (They had been deprecated since Python 3.1 or 3.2).
    - The deprecated smtpd and distutils modules have been removed (see PEP
    594 <https://peps.python.org/pep-0594> and PEP 632
    <https://peps.python.org/pep-0632>. The setuptools package (installed by
    default in virtualenvs and many other places) continues to provide the
    distutils module.
    - A number of other old, broken and deprecated functions, classes and
    methods have been removed.
    - Invalid backslash escape sequences in strings now warn with
    SyntaxWarning instead of DeprecationWarning, making them more visible.
    (They will become syntax errors in the future.)
    - The internal representation of integers has changed in preparation for
    performance enhancements. (This should not affect most users as it is an
    internal detail, but it may cause problems for Cython-generated code.)
    - (Hey, fellow core developer, if a feature you find important is
    missing from this list, let Thomas know <thomas@python.org>.)

    For more details on the changes to Python 3.12, see What's new in Python
    3.12. The next pre-release of Python 3.12 will be 3.12.0a7, currently
    scheduled for 2023-04-03.

    More resources

    Online Documentation <https://docs.python.org/3.12/>.
    PEP 693 <https://peps.python.org/pep-0693>, the Python 3.12 Release
    Schedule.
    Report bugs via GitHub Issues <https://github.com/python/cpython/issues>.
    Help fund Python and its community <https://www.python.org/psf/donations/>.

    And now for something completely different

    Let me not to the marriage of true minds
    Admit impediments. Love is not love
    Which alters when it alteration finds,
    Or bends with the remover to remove:
    O, no! it is an ever-fixed mark,
    That looks on tempests and is never shaken;
    It is the star to every wandering bark,
    Whose worth’s unknown, although his height be taken.
    Love’s not Time’s fool, though rosy lips and cheeks
    Within his bending sickle’s compass come;
    Love alters not with his brief hours and weeks,
    But bears it out even to the edge of doom.


    If this be error, and upon me prov’d,
    I never writ, nor no man ever lov’d.


    *Sonnet 116*, by William Shakespeare.

    Enjoy the new releases

    Thanks to all of the many volunteers who help make Python Development and
    these releases possible! Please consider supporting our efforts by
    volunteering yourself or through organization contributions to the Python Software Foundation.

    Regards from unexpectedly chilly California,

    Your release team,
    Thomas Wouters
    Ned Deily
    Steve Dower

    --
    Thomas Wouters <thomas@python.org>

    --- SoupGate-Win32 v1.05
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  • From Robin Becker@21:1/5 to Thomas Wouters on Thu Mar 9 14:22:09 2023
    On 08/03/2023 04:37, Thomas Wouters wrote:
    I'm pleased to announce the release of Python 3.12 alpha 6.

    https://www.python.org/downloads/release/python-3120a6/


    *This is an early developer preview of Python 3.12.*
    Major new features of the 3.12 series, compared to 3.11


    I was able to test reportlab with the 3.12.0a5 release (I build following the Archlinux pkgbuild), but am unable to do
    so with 3.12.0a6 because of problems with cython/lxml/freetype-py (I think).

    With an optimized build of a6 I was getting segfaults which I think were caused by incompatible C extensions from the
    pip cache so decided to rebuild the requirements.

    With latest cython git (allegedly 3.0.0b1) I see errors related to tstate eg


    Cython/Compiler/Parsing.c:86861:34: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘curexc_traceback’
    86861 | PyObject* tmp_tb = tstate->curexc_traceback;

    I guess that this is caused by changes in what we are allowed to see of Python internal structure.

    If anyone knows of a way to advance further I can try to experiment.

    Python 3.12 is still in development. This release, 3.12.0a6 is the sixth of seven planned alpha releases.

    Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the release process.

    During the alpha phase, features may be added up until the start of the
    beta phase (2023-05-08) and, if necessary, may be modified or deleted up until the release candidate phase (2023-07-31). Please keep in mind that
    this is a preview release and its use is not recommended for production environments.

    Many new features for Python 3.12 are still being planned and written.
    Among the new major new features and changes so far:

    ............
    Your release team,
    Thomas Wouters
    Ned Deily
    Steve Dower

    --
    Robin Becker

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)