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.
• 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 and PEP 632). 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.)

For more details on the changes in 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
• PEP 693, the 3.12 Release Schedule
• Report bugs at https://github.com/python/cpython/issues.
• Help fund Python and its community.

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.

https://www.python.org/psf/

Your release team,

Thomas Wouters

Ned Deily

Steve Dower

 

Python 3.11.2, Python 3.10.10 and 3.12.0 alpha 5 are available

Hi everyone,

I am happy to report that after solving some last-time problems we have a bunch of fresh releases for you!

Python 3.12.0 alpha 5

Check the new alpha of 3.12 with some Star Trek vibes:

https://www.python.org/downloads/release/python-3120a5/

210 new commits since 3.12.0a4 last month

Python 3.11.2

A shipment of bugfixes and security releases for the newest Python!

https://www.python.org/downloads/release/python-3112/

194 new commits since 3.11.1

Python 3.10.10

Your trusty Python3.10 just got more stable and secure!

https://www.python.org/downloads/release/python-31010/

131 new commits since 3.10.9

We hope you 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.

https://www.python.org/psf/ 

Your friendly release team,

Ned Deily @nad
Steve Dower @steve.dower
Pablo Galindo Salgado @pablogsal
Łukasz Langa @ambv
Thomas Wouters @thomas

Python 3.12.0 alpha 4 released

I'm pleased to announce the release of Python 3.12 alpha 4.

https://www.python.org/downloads/release/python-3120a4/

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, 3.12.0a4 is the fourth 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.
• 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 and PEP 632). 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.
• (Hey, fellow core developer, if a feature you find important is missing from this list, let Thomas know.)

For more details on the changes in Python 3.12, see What's New In Python 3.12. The next pre-release of Python 3.12 will be 3.12.0a4, currently scheduled for 2023-02-06.

More resources

• Online Documentation
• PEP 693, the 3.12 Release Schedule
• Report bugs at https://github.com/python/cpython/issues.
• Help fund Python and its community.

And now for something completely different

Two haikus apt, as Python's development springs ever forward.

I write, erase, rewrite

Erase again, and then

A poppy blooms.

Haiku by Katsushika Hokusai.

O snail

Climb Mount Fuji,

But slowly, slowly!

Haiku by Kobayashi Issa.

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.

https://www.python.org/psf/

Your release team,

Thomas Wouters

Ned Deily

Steve Dower

Python 3.11.1, 3.10.9, 3.9.16, 3.8.16, 3.7.16, and 3.12.0 alpha 3 are now available

Greetings! We bring you a slew of releases this fine Saint Nicholas / Sinterklaas day. Six simultaneous releases has got to be some record. There’s one more record we broke this time, you’ll see below.

In any case, updating is recommended due to security content:

• 3.7 - 3.12: gh-98739: Updated bundled libexpat to 2.5.0 to fix CVE-2022-43680 (heap use-after-free).
• 3.7 - 3.12: gh-98433: The IDNA codec decoder used on DNS hostnames by socket or asyncio related name resolution functions no longer involves a quadratic algorithm to fix CVE-2022-45061. This prevents a potential CPU denial of service if an out-of-spec excessive length hostname involving bidirectional characters were decoded. Some protocols such as urllib http 3xx redirects potentially allow for an attacker to supply such a name.
• 3.7 - 3.12: gh-100001: python -m http.server no longer allows terminal control characters sent within a garbage request to be printed to the stderr server log.
• 3.8 - 3.12: gh-87604: Avoid publishing list of active per-interpreter audit hooks via the gc module.
• 3.9 - 3.10 (already released in 3.11+ before): gh-97514: On Linux the multiprocessing module returns to using filesystem backed unix domain sockets for communication with the forkserver process instead of the Linux abstract socket namespace. Only code that chooses to use the “forkserver” start method is affected. This prevents Linux CVE-2022-42919 (potential privilege escalation) as abstract sockets have no permissions and could allow any user on the system in the same network namespace (often the whole system) to inject code into the multiprocessing forkserver process. This was a potential privilege escalation. Filesystem based socket permissions restrict this to the forkserver process user as was the default in Python 3.8 and earlier.
• 3.7 - 3.10: gh-98517: Port XKCP’s fix for the buffer overflows in SHA-3 to fix CVE-2022-37454.
• 3.7 - 3.9 (already released in 3.10+ before): gh-68966: The deprecated mailcap module now refuses to inject unsafe text (filenames, MIME types, parameters) into shell commands to address CVE-2015-20107. Instead of using such text, it will warn and act as if a match was not found (or for test commands, as if the test failed).

Python 3.12.0 alpha 3

Get it here, read the change log, sing a GPT-3-generated Sinterklaas song:

https://www.python.org/downloads/release/python-3120a3/

216 new commits since 3.12.0 alpha 2 last month.

Python 3.11.1

Get it here, see the change log, read the recipe for quark soup:

https://www.python.org/downloads/release/python-3111/

A whopping 495 new commits since 3.11.0. This is a massive increase of changes comparing to 3.10 at the same stage in the release cycle: there were “only” 339 commits between 3.10.0 and 3.10.1.

Python 3.10.9

Get it here, read the change log, see circular patterns:

https://www.python.org/downloads/release/python-3109/

165 new commits.

Python 3.9.16

Get it here, read the change log, consider upgrading to a newer version:

https://www.python.org/downloads/release/python-3916/

Security-only release with no binaries. 10 commits.

Python 3.8.16

Get it here, see the change log, definitely upgrade to a newer version:

https://www.python.org/downloads/release/python-3816/

Security-only release with no binaries. 9 commits.

Python 3.7.16

Get it here, read the change log, check PEP 537 to confirm EOL is coming to this version in June 2023:

https://www.python.org/downloads/release/python-3716/

Security-only release with no binaries. 8 commits.

We hope you 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.

https://www.python.org/psf/

Your friendly release team,

Ned Deily @nad
Steve Dower @steve.dower
Pablo Galindo Salgado @pablogsal
Łukasz Langa @ambv
Thomas Wouters @thomas

 

 

 

 

 

 

 

Python 3.12.0 alpha 2 released

I'm pleased to announce the release of Python 3.12 alpha 2.

https://www.python.org/downloads/release/python-3120a2/

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, 3.12.0a2 is the second 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.
• 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 and PEP 632). 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.
• (Hey, fellow core developer, if a feature you find important is missing from this list, let Thomas know.)

For more details on the changes in Python 3.12, see What's New In Python 3.12. The next pre-release of Python 3.12 will be 3.12.0a3, currently scheduled for 2022-12-05.

More resources

• Online Documentation
• PEP 693, the 3.12 Release Schedule
• Report bugs at https://github.com/python/cpython/issues.
• Help fund Python and its community.

And now for something completely different

Life, believe, is not a dream

So dark as sages say;

Oft a little morning rain

Foretells a pleasant day.

Sometimes there are clouds of gloom,

But these are transient all;

If the shower will make the roses bloom,

O why lament its fall?

Rapidly, merrily,

Life's sunny hours flit by,

Gratefully, cheerily,

Enjoy them as they fly!

What though Death at times steps in

And calls our Best away?

What though sorrow seems to win,

O'er hope, a heavy sway?

Yet hope again elastic springs,

Unconquered, though she fell;

Still buoyant are her golden wings,

Still strong to bear us well.

Manfully, fearlessly,

The day of trial bear,

For gloriously, victoriously,

Can courage quell despair!

Life, by Charlotte Brontë, from Poems by Currer, Ellis, and Acton Bell.

Charlotte wrote about the publishing under pseudonyms by her and her sisters, Emily and Anne, in a preface to Emily's Wuthering Heights:

Averse to personal publicity, we veiled our own names under those of Currer, Ellis and Acton Bell; the ambiguous choice being dictated by a sort of conscientious scruple at assuming Christian names positively masculine, while we did not like to declare ourselves women, because – without at that time suspecting that our mode of writing and thinking was not what is called "feminine" – we had a vague impression that authoresses are liable to be looked on with prejudice; we had noticed how critics sometimes use for their chastisement the weapon of personality, and for their reward, a flattery, which is not true praise.

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.

https://www.python.org/psf/

Your release team,

Thomas Wouters

Ned Deily

Steve Dower

Python 3.12.0 alpha 1 released

 As Pablo released Python 3.11.0 final earlier today, now it's my turn to release Python 3.12.0 alpha 1.

https://www.python.org/downloads/release/python-3120a1/

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, 3.12.0a1, is the first 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:

• The deprecated `wstr` and `wstr_length` members of the C implementation of unicode objects were removed, per PEP 623.
• 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` module has been removed.
• A number of other old, broken and deprecated functions, classes and methods have been removed.
• (Hey, **fellow core developer,** if a feature you find important is missing from this list, let Thomas know.)

The next pre-release of Python 3.12 will be 3.12.0a2, currently scheduled for 2022-11-14.

More resources

• Online Documentation
• PEP 693, the 3.12 Release Schedule
• Report bugs at https://github.com/python/cpython/issues.
• Help fund Python and its community at https://www.python.org/psf/donations/.

And now for something completely different

This is Not the Poem that I Had Hoped to Write

This is not the poem that I had hoped to write
when I sat at my desk and the page was white.
You see, there were other words that I’d had in mind,
yet this is what I leave behind.

I thought it was a poem to eradicate war;
one of such power, it would heal all the sores
of a world torn apart by conflict and schism.
But it isn’t.

Lovers, I’d imagined, would quote from it daily,
Mothers would sing it to soothe crying babies.
And whole generations would be given new hope.
Nope.

I had grand aspirations. Believe me, I tried.
Humanity examined with lessons applied.
But the right words escaped me; so often they do.
Have these in lieu.

Brian Bilston

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.

https://www.python.org/psf/

Your release team,
Thomas Wouters
Ned Deily
Steve Dower

Python 3.11.0 is now available

 

This is the release of Python 3.11.0

Python 3.11 is finally released. In the CPython release team, we have put a lot of effort into making 3.11 the best version of Python possible. Better tracebacks, faster Python, exception groups and except*, typing improvements and much more. Get it here:

https://www.python.org/downloads/release/python-3110/

Major new features of the 3.11 series, compared to 3.10

Among the new major new features and changes so far:

• PEP 657 – Include Fine-Grained Error Locations in Tracebacks
• PEP 654 – Exception Groups and except*
• PEP 673 – Self Type
• PEP 646 – Variadic Generics
• PEP 680 – tomllib: Support for Parsing TOML in the Standard Library
• PEP 675 – Arbitrary Literal String Type
• PEP 655 – Marking individual TypedDict items as required or potentially-missing
• bpo-46752 – Introduce task groups to asyncio
• PEP 681 – Data Class Transforms
• bpo-433030– Atomic grouping ((?>…)) and possessive quantifiers (*+, ++, ?+, {m,n}+) are now supported in regular expressions.
• The Faster Cpython Project is already yielding some exciting results. Python 3.11 is up to 10-60% faster than Python 3.10. On average, we measured a 1.22x speedup on the standard benchmark suite. See Faster CPython for details.

More resources

• Online Documentation

• PEP 664, 3.11 Release Schedule
• Report bugs at https://bugs.python.org.

• Help fund Python and its community.

And now for something completely different

When a spherical non-rotating body of a critical radius collapses under its own gravitation under general relativity, theory suggests it will collapse to a single point. This is not the case with a rotating black hole (a Kerr black hole). With a fluid rotating body, its distribution of mass is not spherical (it shows an equatorial bulge), and it has angular momentum. Since a point cannot support rotation or angular momentum in classical physics (general relativity being a classical theory), the minimal shape of the singularity that can support these properties is instead a ring with zero thickness but non-zero radius, and this is referred to as a ringularity or Kerr singularity.

This kind of singularity has the following peculiar property. The spacetime allows a geodesic curve (describing the movement of observers and photons in spacetime) to pass through the center of this ring singularity. The region beyond permits closed time-like curves. Since the trajectory of observers and particles in general relativity are described by time-like curves, it is possible for observers in this region to return to their past. This interior solution is not likely to be physical and is considered a purely mathematical artefact.

There are some other interesting free-fall trajectories. For example, there is a point in the axis of symmetry that has the property that if an observer is below this point, the pull from the singularity will force the observer to pass through the middle of the ring singularity to the region with closed time-like curves and it will experience repulsive gravity that will push it back to the original region, but then it will experience the pull from the singularity again and will repeat this process forever. This is, of course, only if the extreme gravity doesn’t destroy the observer first.

We hope you 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.

https://www.python.org/psf/

Your friendly release team,
Ned Deily @nad 
Steve Dower @steve.dower 
Pablo Galindo Salgado @pablogsal