Mailing List Archive

Python 3.12.0 alpha 6 released
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>
--
https://mail.python.org/mailman/listinfo/python-list
Re: Python 3.12.0 alpha 6 released [ In reply to ]
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
--
https://mail.python.org/mailman/listinfo/python-list