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Python 3.14.0 alpha 6
by Hugo van Kemenade March 14, 2025

March 14, 2025

Here comes the penultimate alpha. https://www.python.org/downloads/release/python-3140a6/ This is an early developer preview of Python 3.14 Major new features of the 3.14 series, compared to 3.13: Python 3.14 is still in development. This release, 3.14.0a6, 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 (2025-05-06) and, if necessary, may be modified or deleted up until the release candidate phase (2025-07-22). Please keep in mind that this is a preview release and its use is not recommended for production environments. Many new features for Python 3.14 are still being planned and written. Among the new major new features and changes so far: - PEP 649: deferred evaluation of annotations - PEP 741: Python configuration C API - PEP 761: Python 3.14 and onwards no longer provides PGP signatures for release artifacts. Instead, Sigstore is recommended for verifiers. - Improved error messages - A new type of interpreter. For certain newer compilers, this interpreter provides significantly better performance. Opt-in for now, requires building from source. - UUID versions 6-8 are now supported by the uuid module, and generation of versions 3-5 and 8 are up to 40% faster. - Python removals and deprecations - C API removals and deprecations - (Hey, fellow core developer, if a feature you find important is missing from this list, let Hugo know.) The next pre-release of Python 3.14 will be the final alpha, 3.14.0a7, currently scheduled for 2025-04-08. More resources - Online documentation: https://docs.python.org/3.14/ - PEP 745, 3.14 Release Schedule: https://peps.python.org/pep-0745/ - Report bugs at https://github.com/python/cpython/issues - Help fund Python and its community: https://www.python.org/psf/donations/ And now for something completely different! March 14 is celebrated as pi day, because 3.14 is an approximation of π. The day is observed by eating pies (savoury and/or sweet) and celebrating π. The first pi day was organised by physicist and tinkerer Larry Shaw of the San Francisco Exploratorium in 1988. It is also the International Day of Mathematics and Albert Einstein’s birthday. Let’s all eat some pie, recite some π, install and test some py, and wish a happy birthday to Albert, Loren and all the other pi day children! Enjoy the new release 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 organisation contributions to the Python Software Foundation. Regards from Helsinki as fresh snow falls, Your release team, Hugo van Kemenade Ned Deily Steve Dower Łukasz Langa

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SQLObject 3.13.0
by Oleg Broytman March 7, 2025

March 7, 2025

Hello! I'm pleased to announce version 3.13.0, the first release of branch 3.13 of SQLObject. What's new in SQLObject ======================= Drivers ------- * Extended default list of MySQL drivers to ``mysqldb``, ``mysqlclient``, ``mysql-connector``, ``mysql-connector-python``, ``pymysql``. * Extended default list of PostgreSQL drivers to ``psycopg``, ``psycopg2``, ``pygresql``, ``pg8000``. * Fixed outstanding problems with ``psycopg``. It's now the first class driver. * Fixed all problems with ``pg8000``. It's now the first class driver. * Dropped support for ``CyMySQL``; its author refused to fix unicode-related problems. * Dropped support for ``py-postgresql``; it's completely broken with debianized ``Postgres`` and the authors reject fixes. Tests ----- * Added tests for ``mysqldb`` (aka ``mysql-python``) and ``mysqlclient`` on w32. * Improved tests of ``mysql-connector`` and ``mysql-connector-python``. CI -- * Tests(GHActions): Fixed old bugs in the workflow on w32. * Run tests with ``psycopg[c]``. For a more complete list, please see the news: http://sqlobject.org/News.html What is SQLObject ================= SQLObject is a free and open-source (LGPL) Python object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL/MariaDB (with a number of DB API drivers: ``MySQLdb``, ``mysqlclient``, ``mysql-connector``, ``PyMySQL``, ``mariadb``), PostgreSQL (``psycopg``, ``psycopg2``, ``PyGreSQL``, partially ``pg8000``), SQLite (builtin ``sqlite3``); connections to other backends - Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB) - are less debugged). Python 2.7 or 3.4+ is required. Where is SQLObject ================== Site: http://sqlobject.org Download: https://pypi.org/project/SQLObject/3.13.0 News and changes: http://sqlobject.org/News.html StackOverflow: https://stackoverflow.com/questions/tagged/sqlobject Mailing lists: https://sourceforge.net/p/sqlobject/mailman/ Development: http://sqlobject.org/devel/ Developer Guide: http://sqlobject.org/DeveloperGuide.html Example ======= Install:: $ pip install sqlobject Create a simple class that wraps a table:: >>> from sqlobject import * >>> >>> sqlhub.processConnection = connectionForURI('sqlite:/:memory:') >>> >>> class Person(SQLObject): ... fname = StringCol() ... mi = StringCol(length=1, default=None) ... lname = StringCol() ... >>> Person.createTable() Use the object:: >>> p = Person(fname="John", lname="Doe") >>> p <Person 1 fname='John' mi=None lname='Doe'> >>> p.fname 'John' >>> p.mi = 'Q' >>> p2 = Person.get(1) >>> p2 <Person 1 fname='John' mi='Q' lname='Doe'> >>> p is p2 True Queries:: >>> p3 = Person.selectBy(lname="Doe")[0] >>> p3 <Person 1 fname='John' mi='Q' lname='Doe'> >>> pc = Person.select(Person.q.lname=="Doe").count() >>> pc 1 Oleg. -- Oleg Broytman https://phdru.name/ phd(a)phdru.name Programmers don't die, they just GOSUB without RETURN.

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python-oracledb 3.0.0
by Anthony Tuininga March 3, 2025

March 3, 2025

What is python-oracledb? python-oracledb is a Python extension module that enables access to Oracle Database for Python and conforms to the Python database API 2.0 specifications with a number of enhancements. This module replaces cx_Oracle. Where do I get it? https://pypi.org/project/oracledb/3.0.0/ The easiest method to install/upgrade python-oracledb is via pip as in python -m pip install oracledb --upgrade What's new? This release adds a number of new features and corrects a number of issues. Highlights are as follows: - initial support for AQ in thin mode - an Apache Arrow PyCapsule interface for efficient data exchange with external libraries - support for Oracle Database 23.7 SPARSE VECTOR - namespace package oracledb.plugins that can be used for extension of python-oracledb - support for centralized configuration providers (Oracle Cloud Infrastructure Object torage and Microsoft Azure App Configuration) as well as file-based configurations - cloud native authentication support through the integration of Oracle Cloud Infrastructure (OCI) and Azure SDKs See the full release notes for all of the details: https://python-oracledb.readthedocs.io/en/latest/release_notes.html#oracled… <https://python-oracledb.readthedocs.io/en/latest/release_notes.html#oracled…> Please provide any feedback via GitHub issues: https://github.com/oracle/ python-oracledb/issues or discussions: https://github.com/oracle/python- oracledb/discussions

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SCons 4.9.0 Released
by Bill Deegan March 2, 2025

March 2, 2025

A new SCons release, 4.9.0, is now available on the SCons download page: https://scons.org/pages/download.html Here is a summary of the changes since 4.8.1: NOTE: Since SCons 4.9.0, Python 3.7.0 or above is required. CHANGED/ENHANCED EXISTING FUNCTIONALITY --------------------------------------- - Expose the `extra_libs` keyword argument in `CheckLibWithHeader` and 'CheckLib' - Removed Python 3.6 support. - Override environments, created when giving construction environment keyword arguments to Builder calls (or manually, through the undocumented Override method), were modified not to "leak" on item deletion. The item will now not be deleted from the base environment. - Added support for tracking beamer themes in the LaTeX scanner. - MSVS: msvs project files are always generated before the corresponding msvs solution files. This changes the behavior of clean for a project generated with auto_build_solution disabled and explicit solution generation: when the solution files are cleaned, the project files are also cleaned. The tests for vs 6.0-7.1 were updated accordingly. - MSVS: Add an optional keyword argument, auto_filter_projects, to MSVSSolution. Accepted values for auto_filter_projects are: - None [default]: raise an exception when solution file names or nodes are detected in the projects argument list. - True or evaluates True: automatically remove solution file names and nodes from the project argument list. - False or evaluates False: leave solution file names and nodes in the project argument list. An exception is not raised. Solution file names and/or nodes in the project argument list cause erroneous Project records to be produced in the generated solution file. As a convenience, a user may elect to ignore solution file names and nodes in the projects argument list rather than manually removing solution file names and nodes from the MSVSProject return values. - SCons C preprocessor: - Update the optional integer suffixes to include the z|Z and wb|WB suffixes. - Add support for binary integer constants. - Add support for octal integer constants. Previously, octal integers were evaluated as decimal integers. A literal zero (0) is treated as an octal number. - Change the method for attempted conversion of a define expansion value to an integer from a literal to a constant expression evaluation. - Add a tag to each CacheDir to let systems ignore backing it up (per https://bford.info/cachedir/). Update the way a CacheDir is created, since it now has to create two files. - The Dictionary method now has an as_dict flag. If true, Dictionary always returns a dict. The default remains to return different types depending on whether zero, one, or multiple construction - A Variables object now makes available a "defaulted" attribute, a list of variable names that were set in the environment with their values taken from the default in the variable description (if a variable was set to the same value as the default in one of the input sources, it is not included in this list). - If a build Variable is created with no aliases, the name of the Variable is no longer listed in its aliases. Internally, the name and aliases are considered together anyway so this should not have any effect except for being visible to custom help text formatters. FIXES ----- - PackageVariable now does what the documentation always said it does if the variable is used on the command line with one of the enabling string as the value: the variable's default value is produced (previously it always produced True in this case). - Temporary files created by TempFileMunge() are now cleaned up on scons exit, instead of at the time they're used. Fixes #4595. - AddOption now correctly adds short (single-character) options. Previously an added short option would always report as unknown, while long option names for the same option worked. Short options that take a value require the user to specify the value immediately following the option, with no spaces (e.g. -j5 and not -j 5). - Fix a problem with compilation_db component initialization - the entries for assembler files were not being set up correctly. - On Darwin, PermissionErrors are now handled while trying to access /etc/paths.d. This may occur if SCons is invoked in a sandboxed environment (such as Nix). - Added error handling when creating MSVC detection debug log file specified by SCONS_MSCOMMON_DEBUG. - MSVS: Modify select msvs test scripts to run on platforms not supported by the msvs/msvc tool implementation via a default host architecture for unsupported platforms. - MSVS: Fixed early loop exit in select msvs test scripts. Select msvs test scripts were being invoked for msvc version 8.0 only. Additional msvs tool and test changes due to the msvs test scripts being run for all msvc versions (i.e., minor test and tool issues went undetected). - MSVS: for variant build configurations, msvs solution files are generated in the source directory and a placeholder file is generated in the variant build directory. This mirrors the behavior of generated msvs project files. - MSVS: msvs project files are generated before the corresponding msvs solution file. User-specified project GUIDs should now be correctly written to the solution file. - SCons C preprocessor: Preserve literals that contain valid integer substring specifications. Previously, the integer suffix could be stripped from a symbol that contained an integer and suffix substring. - SCons C preprocessor: Update the optional integer suffixes to include support for the alternate orderings of unsigned with long or long long as defined in the c/cpp grammar. - SCons C preprocessor: Update the optional integer suffixes for case insensitive specifications as defined in the c/cpp grammar. - Fix nasm test for missing include file, cleanup. - Skip running a few validation tests if the user is root and the test is not designed to work for the root user. - Make sure unknown variables from a Variables file are recognized as such. Previously only unknowns from the command line were recognized (issue #4645). - Update ninja tool to use ninja.BIN_DIR to find pypi packaged ninja binary. python ninja package version 1.11.1.2 changed the location and previous logic no longer worked. - The (optional) C Conditional Scanner now does limited macro replacement on the contents of CPPDEFINES, to improve finding deps that are conditionally included. Previously replacement was only done on macro definitions found in the file being scanned. Only object-like macros are replaced (not function-like), and only on a whole-word basis; recursion is limited to five levels and does not error out if that limit is reached (issue #4523). - Minor modernization: make use of stat object's st_mode, st_mtime and other attributes rather than indexing into stat return. - Ninja's TEMPLATE rule pool changed from `local_pool` to `install_pool` hoping it will fix a race condition that can occurs when Ninja defers to SCons to build. - Renamed env.Help() & Help()'s argument `keep_local` to `local_only`, previously the documentation specified `local_only`, but the code and tests were using `keep_local`. The functionality more closely matches local only. NOTE: It doesn't seem like any code in the wild was using local_only as we'd not received any reports of such until PR #4606 from hedger. - Fix Issue #2281, AddPreAction() & AddPostAction() were being ignored if no action was specified when the Alias was initially created. - Handle case of "memoizer" as one member of a comma-separated --debug string - this was previously missed. IMPROVEMENTS ------------ - For consistency with the optparse "add_option" method, AddOption accepts an SConsOption object as a single argument (this failed previously). Calling AddOption with the full set of arguments (option names and attributes) to set up the option is still the recommended approach. - Add clang and clang++ to the default tool search orders for POSIX and Windows platforms. These will be searched for after gcc and g++, respectively. Does not affect explicitly requested tool lists. Note: on Windows, SCons currently only has builtin support for clang, not for clang-cl, the version of the frontend that uses cl.exe-compatible command line switches. DOCUMENTATION ------------- - Some manpage cleanup for the gettext and pdf/ps builders. - Some clarifications in the User Guide "Environments" chapter. - Clarify documentation of Repository() in manpage and user guide. - Many grammatical and spelling fixes in the documentation. - Update Clean and NoClean documentation. - Improved Variables documentation. - Update the User Guide Command() example which now shows a target name being created from '${SOURCE.base}.out' to use a valid special attribute and to explain what's being done in the example. DEVELOPMENT ----------- - Ruff/Mypy: Excluded items now synced. - Ruff: Linter includes new rules - `FA`, `UP006`, `UP007`, and `UP037` - to detect and upgrade legacy type-hint syntax. - Removed "SCons.Util.sctyping.py", as the functionality can now be substituted via top-level `from __future__ import annotations`. - Implemented type hints for Nodes. - Added TestSCons.NINJA_BINARY to TestSCons to centralize logic to find ninja binary - Refactored SCons.Tool.ninja -> SCons.Tool.ninja_tool, and added alias so env.Tool('ninja') will still work. This avoids conflicting with the pypi module ninja. Thanks to the following contributors listed below for their contributions to this release. ========================================================================================== .. code-block:: text git shortlog --no-merges -ns 4.8.1..HEAD 50 Mats Wichmann 46 William Deegan 19 Joseph Brill 10 Alex Thiessen 4 Thaddeus Crews 3 Ruben Di Battista 2 Adam Scott 2 Keith F. Prussing 2 Prabhu Singh Khalsa 1 Adam Simpkins 1 Alex James 1 Yevhen Babiichuk (DustDFG)

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PyCA cryptography 44.0.2 released
by Alex Gaynor March 2, 2025

March 2, 2025

PyCA cryptography 44.0.2 has been released to PyPI. cryptography includes both high level recipes and low level interfaces to common cryptographic algorithms such as symmetric ciphers, asymmetric algorithms, message digests, X.509, key derivation functions, and much more. We support Python 3.7+, and PyPy3 7.3.10+. Changelog (https://cryptography.io/en/latest/changelog/#v44-0-2): * We now build wheels for PyPy 3.11. Alex -- All that is necessary for evil to succeed is for good people to do nothing.

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ANN: Python-Blosc2 3.1.1 has been released!
by Francesc Alted Feb. 14, 2025

Feb. 14, 2025

Announcing Python-Blosc2 3.1.0 (and 3.1.1) ========================================== This is a minor release where we optimized the performance of the internal compute engine, as well as indexing for NDArrays. We also added new API: * blosc2.evaluate: a drop-in replacement of numexpr.evaluate(). This allows to evaluate expressions with combinations of NDArrays and NumPy arrays. In addition, it has the next improvements: - More functionality than numexpr (e.g. reductions). - Follow casting rules of NumPy more closely. - Use both NumPy arrays and Blosc2 NDArrays in the same expression. * blosc2.jit: a decorator to compile a function with a NumPy expression using the compute engine of Blosc2. Useful to speed up the evaluation of pure NumPy expressions at runtime. You can think of Python-Blosc2 3.0 as an extension of NumPy/numexpr that: - Can deal with ndarrays compressed using first-class codecs & filters. - Performs many kind of math expressions, including reductions, indexing... - Supports broadcasting operations. - Supports NumPy ufunc mechanism: mix and match NumPy and Blosc2 computations. - Integrates with Numba and Cython via UDFs (User Defined Functions). - Adheres to modern NumPy casting rules way better than numexpr. - Computes expressions only when needed. They can also be stored for later use. Install it with:: pip install blosc2 --update # if you prefer wheels conda install -c conda-forge python-blosc2 mkl # if you prefer conda and MKL For more info, you can have a look at the release notes in: https://github.com/Blosc/python-blosc2/releases Code example:: from time import time import blosc2 import numpy as np # Create some data operands N = 20_000 a = blosc2.linspace(0, 1, N * N, dtype="float32", shape=(N, N)) b = blosc2.linspace(1, 2, N * N, shape=(N, N)) c = blosc2.linspace(-10, 10, N) # broadcasting is supported # Expression t0 = time() expr = ((a**3 + blosc2.sin(c * 2)) < b) & (c > 0) print(f"Time to create expression: {time()-t0:.5f}") # Evaluate while reducing (yep, reductions are in) along axis 1 t0 = time() out = blosc2.sum(expr, axis=1) t1 = time() - t0 print(f"Time to compute with Blosc2: {t1:.5f}") # Evaluate using NumPy na, nb, nc = a[:], b[:], c[:] t0 = time() nout = np.sum(((na**3 + np.sin(nc * 2)) < nb) & (nc > 0), axis=1) t2 = time() - t0 print(f"Time to compute with NumPy: {t2:.5f}") print(f"Speedup: {t2/t1:.2f}x") assert np.all(out == nout) print("All results are equal!") This will output something like (using an Intel i9-13900X CPU here):: Time to create expression: 0.00033 Time to compute with Blosc2: 0.46387 Time to compute with NumPy: 2.57469 Speedup: 5.55x All results are equal! See a more in-depth example, explaining why Python-Blosc2 is so fast, at: https://www.blosc.org/python-blosc2/getting_started/overview.html#operating… Sources repository ------------------ The sources and documentation are managed through github services at: https://github.com/Blosc/python-blosc2 Python-Blosc2 is distributed using the BSD license, see https://github.com/Blosc/python-blosc2/blob/main/LICENSE.txt for details. Mastodon feed ------------- Follow https://fosstodon.org/@Blosc2 to get informed about the latest developments. Enjoy! - Blosc Development Team Compress better, compute bigger

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ANN: psutil 7.0.0 released (remove Python 2.7 support)
by Giampaolo Rodola' Feb. 13, 2025

Feb. 13, 2025

Hello all, I'm glad to announce the release of psutil 7.0.0: https://github.com/giampaolo/psutil About ===== psutil (process and system utilities) is a cross-platform library for retrieving information on running processes and system utilization (CPU, memory, disks, network) in Python. It is useful mainly for system monitoring, profiling and limiting process resources and management of running processes. It implements many functionalities offered by command line tools such as: ps, top, lsof, netstat, ifconfig, who, df, kill, free, nice, ionice, iostat, iotop, uptime, pidof, tty, taskset, pmap. It currently supports Linux, Windows, macOS, Sun Solaris, FreeBSD, OpenBSD, NetBSD and AIX. Supported Python versions are cPython 3.6+ and PyPy. This release removes support for Python 2.7. See blog post: https://gmpy.dev/blog/2025/psutil-drop-python-27-support What's new ========== 2025-02-13 **Enhancements** - #669, [Windows]: `net_if_addrs()`_ also returns the ``broadcast`` address instead of ``None``. - #2480: Python 2.7 is no longer supported. Latest version supporting Python 2.7 is psutil 6.1.X. Install it with: ``pip2 install psutil==6.1.*``. - #2490: removed long deprecated ``Process.memory_info_ex()`` method. It was deprecated in psutil 4.0.0, released 8 years ago. Substitute is ``Process.memory_full_info()``. **Bug fixes** - #2496, [Linux]: Avoid segfault (a cPython bug) on ``Process.memory_maps()`` for processes that use hundreds of GBs of memory. - #2502, [macOS]: `virtual_memory()`_ now relies on ``host_statistics64`` instead of ``host_statistics``. This is the same approach used by ``vm_stat`` CLI tool, and should grant more accurate results. **Compatibility notes** - #2480: Python 2.7 is no longer supported. - #2490: removed long deprecated ``Process.memory_info_ex()`` method. Links ===== - Home page: https://github.com/giampaolo/psutil - Download: https://pypi.org/project/psutil/#files - Documentation: http://psutil.readthedocs.io - What's new: https://github.com/giampaolo/psutil/blob/master/HISTORY.rst Hashes ====== psutil-7.0.0-cp36-abi3-macosx_10_9_x86_64.whl md5: c2607c927edc1f378d45b0d38f86e7c1 sha256: 101d71dc322e3cffd7cea0650b09b3d08b8e7c4109dd6809fe452dfd00e58b25 psutil-7.0.0-cp36-abi3-macosx_11_0_arm64.whl md5: 361dc77a06c0d7e4ff8264147ac76b47 sha256: 39db632f6bb862eeccf56660871433e111b6ea58f2caea825571951d4b6aa3da psutil-7.0.0-cp36-abi3-manylinux_2_12_i686.manylinux2010_i686.manylinux_2_17_i686.manylinux2014_i686.whl md5: d1b25e4e43c96c8ce6b6699e7343f91c sha256: 1fcee592b4c6f146991ca55919ea3d1f8926497a713ed7faaf8225e174581e91 psutil-7.0.0-cp36-abi3-manylinux_2_12_x86_64.manylinux2010_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl md5: 7afbeec81bc99116377660f1e7c345a7 sha256: 4b1388a4f6875d7e2aff5c4ca1cc16c545ed41dd8bb596cefea80111db353a34 psutil-7.0.0-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl md5: dc5502c0042a6e5cd4bb2feb12f2565b sha256: a5f098451abc2828f7dc6b58d44b532b22f2088f4999a937557b603ce72b1993 psutil-7.0.0-cp36-cp36m-win32.whl md5: 2201432bbed8a14068a75337023952c0 sha256: 84df4eb63e16849689f76b1ffcb36db7b8de703d1bc1fe41773db487621b6c17 psutil-7.0.0-cp36-cp36m-win_amd64.whl md5: f62c8bf1d36d2b15c4384828a580d4bc sha256: 1e744154a6580bc968a0195fd25e80432d3afec619daf145b9e5ba16cc1d688e psutil-7.0.0-cp37-abi3-win32.whl md5: 2e8f0c36ed491306547c4adf7e7ab31f sha256: ba3fcef7523064a6c9da440fc4d6bd07da93ac726b5733c29027d7dc95b39d99 psutil-7.0.0-cp37-abi3-win_amd64.whl md5: 5992b730c3f438c9f0c3dc53481cffd3 sha256: 4cf3d4eb1aa9b348dec30105c55cd9b7d4629285735a102beb4441e38db90553 psutil-7.0.0.tar.gz md5: 1c074ff5828dff3a3ecfa0e0f9de2e63 sha256: 7be9c3eba38beccb6495ea33afd982a44074b78f28c434a1f51cc07fd315c456 -- Giampaolo - https://gmpy.dev/about

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imaplib changes in Python 3.14.0 alpha 5
by Forest Feb. 13, 2025

Feb. 13, 2025

Hi, folks. The IMAP4 IDLE command has landed in imaplib as of Python 3.14.0 alpha 5, along with some internal module changes to support it. If you maintain code that uses imaplib, now would be a good time to test it with the latest alpha. If you've been wanting IMAP IDLE support, now would be a good time to try the new feature with your mail server(s) of choice. Cheers!

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NumPy 2.2.3 Release
by Charles R Harris Feb. 13, 2025

Feb. 13, 2025

Hi All, On behalf of the NumPy team, I'm pleased to announce the release of NumPy 2.2.3. NumPy 2.2.3 is a patch release that fixes bugs found after the 2.2.2 release. The majority of the changes are typing improvements and fixes for free threaded Python. Both of those areas are still under development, so if you discover new problems, please report them. This release supports Python 3.10-3.13. Wheels can be downloaded from PyPI <https://pypi.org/project/numpy/2.2.3>; source archives, release notes, and wheel hashes are available on Github <https://github.com/numpy/numpy/releases/tag/v2.2.3>. *Contributors* A total of 9 people contributed to this release. People with a "+" by their names contributed a patch for the first time. - !amotzop - Charles Harris - Chris Sidebottom - Joren Hammudoglu - Matthew Brett - Nathan Goldbaum - Raghuveer Devulapalli - Sebastian Berg - Yakov Danishevsky + *Pull requests merged* A total of 21 pull requests were merged for this release. - #28185: MAINT: Prepare 2.2.x for further development - #28201: BUG: fix data race in a more minimal way on stable branch - #28208: BUG: Fix ``from_float_positional`` errors for huge pads - #28209: BUG: fix data race in np.repeat - #28212: MAINT: Use VQSORT_COMPILER_COMPATIBLE to determine if we should... - #28224: MAINT: update highway to latest - #28236: BUG: Add cpp atomic support (#28234) - #28237: BLD: Compile fix for clang-cl on WoA - #28243: TYP: Avoid upcasting ``float64`` in the set-ops - #28249: BLD: better fix for clang / ARM compiles - #28266: TYP: Fix ``timedelta64.__divmod__`` and ``timedelta64.__mod__``... - #28274: TYP: Fixed missing typing information of set_printoptions - #28278: BUG: backport resource cleanup bugfix from gh-28273 - #28282: BUG: fix incorrect bytes to stringdtype coercion - #28283: TYP: Fix scalar constructors - #28284: TYP: stub ``numpy.matlib`` - #28285: TYP: stub the missing ``numpy.testing`` modules - #28286: CI: Fix the github label for ``TYP:`` PR's and issues - #28305: TYP: Backport typing updates from main - #28321: BUG: fix race initializing legacy dtype casts - #28324: CI: update test_moderately_small_alpha Cheers, Charles Harris

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Python 3.14.0 alpha 5
by Hugo van Kemenade Feb. 11, 2025

Feb. 11, 2025

Here comes the antepenultimate alpha. https://www.python.org/downloads/release/python-3140a5/ This is an early developer preview of Python 3.14. Major new features of the 3.14 series, compared to 3.13: Python 3.14 is still in development. This release, 3.14.0a5, is the fifth 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 (2025-05-06) and, if necessary, may be modified or deleted up until the release candidate phase (2025-07-22). Please keep in mind that this is a preview release and its use is not recommended for production environments. Many new features for Python 3.14 are still being planned and written. Among the new major new features and changes so far: - PEP 649: deferred evaluation of annotations - PEP 741: Python configuration C API - PEP 761: Python 3.14 and onwards no longer provides PGP signatures for release artifacts. Instead, Sigstore is recommended for verifiers. - Improved error messages - A new type of interpreter. For certain newer compilers, this interpreter provides significantly better performance. Opt-in for now, requires building from source. - Python removals and deprecations - C API removals and deprecations - (Hey, fellow core developer, if a feature you find important is missing from this list, let Hugo know.) The next pre-release of Python 3.14 will be the penultimate alpha, 3.14.0a6, currently scheduled for 2025-03-14. More resources: - Online documentation: https://docs.python.org/3.14/ - PEP 745, 3.14 Release Schedule: https://peps.python.org/pep-0745/ - Report bugs at https://github.com/python/cpython/issues - Help fund Python and its community: https://www.python.org/psf/donations/ And now for something completely different! 2025-01-29 marked the start of a new lunar year, the Year of the Snake 🐍 (and the Year of Python?). For centuries, π was often approximated as 3 in China. Some time between the years 1 and 5 CE, astronomer, librarian, mathematician and politician Liu Xin (劉歆) calculated π as 3.154. Around 130 CE, mathematician, astronomer, and geographer Zhang Heng (張衡, 78–139) compared the celestial circle with the diameter of the earth as 736:232 to get 3.1724. He also came up with a formula for the ratio between a cube and inscribed sphere as 8:5, implying the ratio of a square’s area to an inscribed circle is √8:√5. From this, he calculated π as √10 (~3.162). Third century mathematician Liu Hui (刘徽) came up with an algorithm for calculating π iteratively: calculate the area of a polygon inscribed in a circle, then as the number of sides of the polygon is increased, the area becomes closer to that of the circle, from which you can approximate π. This algorithm is similar to the method used by Archimedes in the 3rd century BCE and Ludolph van Ceulen in the 16th century CE (see 3.14.0a2 release notes), but Archimedes only went up to a 96-sided polygon (96-gon). Liu Hui went up to a 192-gon to approximate π as 157/50 (3.14) and later a 3072-gon for 3.14159. Liu Hu wrote a commentary on the book The Nine Chapters on the Mathematical Art which included his π approximations. In the fifth century, astronomer, inventor, mathematician, politician, and writer Zu Chongzhi (祖沖之, 429–500) used Liu Hui’s algorithm to inscribe a 12,288-gon to compute π between 3.1415926 and 3.1415927, correct to seven decimal places. This was more accurate than Hellenistic calculations and wouldn’t be improved upon for 900 years. Happy Year of the Snake! Enjoy the new release 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 organisation contributions to the Python Software Foundation. Regards from a remarkably snowless Helsinki, Your release team, Hugo van Kemenade Ned Deily Steve Dower Łukasz Langa

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