Mailman 3 August 2020 - Python-announce-list

[RELEASED] Python 3.5.10rc1 is released
by Larry Hastings Aug. 22, 2020

Aug. 22, 2020

On behalf of the Python development community, I'm pleased to finally announce the availability of Python 3.5.10rc1. Python 3.5 is in "security fixes only" mode. This new version only contains security fixes, not conventional bug fixes, and it is a source-only release. Important Notice: The latest releases of Linux (Ubuntu 20.04, Fedora 32) ship with a new version of OpenSSL. New versions of OpenSSL often include upgraded configuration requirements to maintain network security; this new version no longer finds Python 3.5's OpenSSL configuration acceptable. As a result, most or all secure-transport networking libraries are broken in this release on systems where this new version of OpenSSL is deployed. This means, for example, that seven (7) of the regression tests in the test suite now regularly fail. Older versions of Linux, with older versions of OpenSSL installed, are unaffected. We're aware of the problem. Unfortunately, as 3.5 is nearly completely out of support, it has become very low priority, and we've been unable to find the resources to get the problem fixed. It's possible that these problems simply won't be fixed in 3.5 before it reaches its end-of-life. As always we recommend upgrading to the latest Python release wherever possible. You can find Python 3.5.10rc1 here: https://www.python.org/downloads/release/python-3510rc1/ Cheers, //arry/

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attrs 20.1.0 released!
by Hynek Schlawack Aug. 20, 2020

Aug. 20, 2020

I’m thrilled to finally present attrs 20.1.0 with the following changes: - bug fixes - performance improvements JUST KIDDING! This release is HUGE and I'm stoked we can finally get it to you! It’s the result of more than a year of development and not only does it come with many great features that users desired for a long time, it also lays the foundation for the future evolution of this package. ---- The final push has only been possible thanks to attrs’s Tidelift subscribers (https://tidelift.com/funding/github/pypi/attrs) and my generous GitHub Sponsors (https://github.com/sponsors/hynek). If you want to speed up the development for the forthcoming 20.2.0 release (You do! There’s a lot of great stuff coming up!), please consider supporting my work by either sponsoring me, or convincing your boss to subscribe to my projects on Tidelift (https://tidelift.com). Hooks on Setting Attributes You could always use validators for when a class is instantiated and you could always make classes immutable. Now you can also freeze specific attributes and validate attribute values on assignment using the new on_setattr argument. It takes a callable and runs it whenever the user tries to assign a new value to the attribute. See #660 (https://github.com/python-attrs/attrs/pull/660). Automatic Detection of Own Methods If you want to write your own dunder method – say __init__ – you have to remember to tell attrs to not generate an own version (e.g. @attr.s(init=False)) otherwise it will happily overwrite it. Not anymore! If you pass @attr.s(auto_detect=True), attrs will look for your own methods automatically – but only in the current class. In other words: inherited methods don’t count. It’s still a bit of hassle to set it to True, but that will be remedied in the future (see below). See #607 (https://github.com/python-attrs/attrs/pull/607). Attribute Collection and the MRO attrs’s collection of attributes was slightly wrong in very specific situations involving multiple inheritance (editor’s note: don’t use multiple inheritance). Most people won't notice, but some do (https://github.com/python-attrs/attrs/issues/428) we like to do things the right way. See #635 (https://github.com/python-attrs/attrs/pull/635). The Road Ahead attrs started out in February 2015. The Python landscape was very different back then and lots of things changed since. We also got some things subtly wrong that need to be fixed by passing arguments. And finally the cute attr.s and attr.ib function names didn't age as attrs gained more and more features over the years. Therefore, we intend to add a new attrs namespace in 20.2.0 later this year, allowing you to import attrs. But there’s more than an extra “s” planned. We want to free people from having to pass all kinds of arguments to get the “good behavior” of attrs and therefore we want to introduce new APIs that have better defaults. Thanks to the new namespace, we don’t have to break backward compatibility and the old APIs aren’t going anywhere: in fact, the new ones build on them. ---- To get the new APIs just right, we’ve added them to attrs 20.1.0 provisionally for you to test and give us with feedback. The APIs are attr.define() which is supposed to become the default way to decorate classes in the future, attr.frozen() that’s the same thing as attr.define(frozen=True) and finally attr.mutable() that is an alias for define() and was wished for by immutability fans. There’s also a new alias for attr.ib() called attr.field() since that seems to be the nomenclature the Python community has agreed on. It carries no changes except that it’s keyword-only. To give you a taste, this is an example for a class defined using the new APIs: import attr @attr.define class C: x: int y: str = attr.field(default="foo") def __repr__(self) -> str: return "attrs will not overwrite this method." If everything goes according to plan, in 20.2.0 you’ll be able to substitute attr with attrs. N.B. All these APIs require at least Python 3.6. While attrs will be Python 2-compatible as long as we can (https://www.attrs.org/en/stable/python-2.html), the new APIs are not. ---- Check out the API documentation for provisional APIs (https://www.attrs.org/en/stable/api.html#provisional-apis) and please use issue #668 (https://github.com/python-attrs/attrs/issues/668) for feedback! Relevant discussions happened in #408 (https://github.com/python-attrs/attrs/issues/408), #487 (https://github.com/python-attrs/attrs/issues/487), and finally #666 (https://github.com/python-attrs/attrs/pull/666) (yep). Full Changelog The full (looong) changelog with many more features and fixes can be found at <https://www.attrs.org/en/stable/changelog.html>.

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Vulture 2.1
by Jendrik Seipp Aug. 19, 2020

Aug. 19, 2020

Vulture - Find dead code ======================== Vulture finds unused code in Python programs. This is useful for cleaning up and finding errors in large code bases. If you run Vulture on both your library and test suite you can find untested code. Due to Python's dynamic nature, static code analyzers like Vulture are likely to miss some dead code. Also, code that is only called implicitly may be reported as unused. Nonetheless, Vulture can be a very helpful tool for higher code quality. Download ======== https://github.com/jendrikseipp/vulture http://pypi.python.org/pypi/vulture Features ======== * fast: uses static code analysis * tested: tests itself and has complete test coverage * complements pyflakes and has the same output syntax * sorts unused classes and functions by size with ``--sort-by-size`` * supports Python Python 3.6+ News ==== * Treat `getattr/hasattr(obj, "constant_string", ...)` as a reference to `obj.constant_string` (jingw, #219). * Fix false positives when assigning to `x.some_name` but reading via `some_name`, at the cost of potential false negatives (jingw, #221). * Allow reading options from `pyproject.toml` (Michel Albert, #164, #215). Cheers Jendrik

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Wing Python IDE version 7.2.4 has been released
by Wingware Aug. 18, 2020

Aug. 18, 2020

Wing 7.2.4 introduces support for Python 3.9, adds a preference to set the size of white space indicators, and makes a number of usability improvements. Details: https://wingware.com/news/2020-08-17 Downloads: <https://wingware.com/downloads/wing-pro/7.2/binaries>https://wingware.com/downloads == About Wing == Wing is a light-weight but full-featured Python IDE designed specifically for Python, with powerful editing, code inspection, testing, and debugging capabilities. Wing's deep code analysis provides auto-completion, auto-editing, and refactoring that speed up development. Its top notch debugger works with any Python code, locally or on a remote host. Wing also supports test-driven development, version control, UI color and layout customization, and includes extensive documentation and support. Wing is available in three product levels: Wing Pro is the full-featured Python IDE for professional developers, Wing Personal is a free Python IDE for students and hobbyists (omits some features), and Wing 101 is a very simplified free Python IDE for beginners (omits many features). Learn more at https://wingware.com/

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[Release] PyData/Sparse 0.11.0
by Hameer Abbasi Aug. 18, 2020

Aug. 18, 2020

Hello, I’m happy to announce the release of PyData/Sparse 0.11.0, available to download via pip and conda-forge. PyData/Sparse is a library that provides sparse N-dimensional arrays for the PyData ecosystem. The official website and documentation is available at: https://sparse.pydata.org The sources and bug tracker: https://github.com/pydata/sparse The changelog for this release can be viewed at: https://sparse.pydata.org/en/0.11.0/changelog.html Best Regards, Hameer Abbasi -- Sent from Canary (https://canarymail.io)

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[Release] Pyo 1.0.2 (Python dsp library)
by Olivier Bélanger Aug. 17, 2020

Aug. 17, 2020

Hello all, I'm very happy to announce the release of pyo 1.0.1, available for python 3.6, 3.7 and 3.8. Pyo is a Python module written in C to help real-time digital signal processing script creation. It provides a complete set of classes to build audio softwares, compose algorithmic musics or simply explore audio processing.It is available for Windows, macOS and linux. It is released under the LGPL 3 license. Official website: http://ajaxsoundstudio.com/software/pyo/ pyo's documentation: http://ajaxsoundstudio.com/pyodoc/ Latest sources and bug tracker: https://github.com/belangeo/pyo Installation: python -m pip install pyo For all the details and how to uninstall version prior to 1.0.0, see this page in the documentation: http://ajaxsoundstudio.com/pyodoc/download.html With this version, pyo does not support python 2.7 and 3.5 anymore, as well as 32-bit python under Windows. Bug Fixes: - Fixed Linseg when the time difference between two points is less than 1 sample. - Fixed segfault in reducePoints function. - Portmidi is now compiled with the latest source, which fixes a crash on Windows 10 when the server is booted with a MIDI device connected. - Fixed compatibility issues with wxpython 4.1. New features: - PVBuffer's length attribute can now be changed dynamically. - Added new object: IFFTMatrix, Inverse Fast Fourier Transform with a PyoMatrixObject as input. - Added new object: TriangleTable. - Added new object: MML, Music Macro Language evaluator. - m_pyo.h, header-only python interpreter for pyo, now works with python 3. Olivier Belanger belangeo(a)gmail.com http://olivier.ajaxsoundstudio.com/ ---- <P><A HREF="http://ajaxsoundstudio.com/software/pyo/">Pyo 1.0.2</A> - short Python DSP library. (17-Aug-20)

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EuroPython 2020: Live Stream Recordings available
by M.-A. Lemburg Aug. 13, 2020

Aug. 13, 2020

We’re happy to announce the public availability of the live stream recordings from EuroPython 2020. They were already available to all conference attendees since the sprint days. * EuroPython YouTube Channel * http://europython.tv/ We have collected the videos in a EuroPython 2020 Live Stream playlist: https://www.youtube.com/playlist?list=PL8uoeex94UhG33fVP7GZEo06gOHlhb0hk Unedited Videos --------------- What we are releasing today are unedited videos recorded for the main track rooms and days. The poster track recordings will be added today or tomorrow. You can use the schedule to navigate the videos. Linking to a specific time in the videos can be done by right-clicking in the video to create a URL which points to the current position. Feel free to share interesting links on social media. Edited Videos ------------- Our video editing company is already busy creating the cut videos. Those should be ready in a month or two. Help spread the word -------------------- Please help us spread this message by sharing it on your social networks as widely as possible. Thank you ! Link to the blog post: https://blog.europython.eu/post/626322517228961792/europython-2020-live-str… Tweet: https://twitter.com/europython/status/1293828734143864833 Thanks, -- EuroPython 2020 Team https://ep2020.europython.eu/ https://www.europython-society.org/

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[RELEASE] Python 3.9.0rc1 is now available
by Łukasz Langa Aug. 11, 2020

Aug. 11, 2020

Python 3.9.0 is *almost* ready. This release, *3.9.0rc1*, is the penultimate release preview. You can get it here: https://www.python.org/downloads/release/python-390rc1/ Entering the release candidate phase, only reviewed code changes which are clear bug fixes are allowed between this release candidate and the final release. The second candidate and the last planned release preview is currently planned for 2020-09-14. Please keep in mind that this is a preview release and its use is *not* recommended for production environments. Calls to action Core developers: all eyes on the docs now * Are all *your* changes properly documented? * Did you notice *other* changes you know of to have insufficient documentation? Community members We *strongly encourage* maintainers of third-party Python projects to prepare their projects for 3.9 compatibility during this phase. As always, report any issues to the Python bug tracker <https://bugs.python.org/>. Installer news This is the first version of Python to default to the 64-bit installer on Windows. The installer now also actively disallows installation on Windows 7. Python 3.9 is incompatible with this unsupported version of Windows. Major new features of the 3.9 series, compared to 3.8 Some of the new major new features and changes in Python 3.9 are: * PEP 584 <https://www.python.org/dev/peps/pep-0584/>, Union Operators in `dict` * PEP 585 <https://www.python.org/dev/peps/pep-0585/>, Type Hinting Generics In Standard Collections * PEP 593 <https://www.python.org/dev/peps/pep-0593/>, Flexible function and variable annotations * PEP 602 <https://www.python.org/dev/peps/pep-0602/>, Python adopts a stable annual release cadence * PEP 615 <https://www.python.org/dev/peps/pep-0615/>, Support for the IANA Time Zone Database in the Standard Library * PEP 616 <https://www.python.org/dev/peps/pep-0616/>, String methods to remove prefixes and suffixes * PEP 617 <https://www.python.org/dev/peps/pep-0617/>, New PEG parser for CPython * BPO 38379 <https://bugs.python.org/issue38379>, garbage collection does not block on resurrected objects; * BPO 38692 <https://bugs.python.org/issue38692>, os.pidfd_open added that allows process management without races and signals; * BPO 39926 <https://bugs.python.org/issue39926>, Unicode support updated to version 13.0.0; * BPO 1635741 <https://bugs.python.org/issue1635741>, when Python is initialized multiple times in the same process, it does not leak memory anymore; * A number of Python builtins (range, tuple, set, frozenset, list, dict) are now sped up using PEP 590 <https://www.python.org/dev/peps/pep-0590> vectorcall; * A number of Python modules (_abc, audioop, _bz2, _codecs, _contextvars, _crypt, _functools, _json, _locale, operator, resource, time, _weakref) now use multiphase initialization as defined by PEP 489 <https://www.python.org/dev/peps/pep-0489/>; * A number of standard library modules (audioop, ast, grp, _hashlib, pwd, _posixsubprocess, random, select, struct, termios, zlib) are now using the stable ABI defined by PEP 384 <https://www.python.org/dev/peps/pep-0384/>.

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Vulture 2.0
by Jendrik Seipp Aug. 11, 2020

Aug. 11, 2020

Vulture - Find dead code ======================== Vulture finds unused code in Python programs. This is useful for cleaning up and finding errors in large code bases. If you run Vulture on both your library and test suite you can find untested code. Due to Python's dynamic nature, static code analyzers like Vulture are likely to miss some dead code. Also, code that is only called implicitly may be reported as unused. Nonetheless, Vulture can be a very helpful tool for higher code quality. Download ======== https://github.com/jendrikseipp/vulture http://pypi.python.org/pypi/vulture Features ======== * fast: uses static code analysis * tested: tests itself and has complete test coverage * complements pyflakes and has the same output syntax * sorts unused classes and functions by size with ``--sort-by-size`` * supports Python Python 3.6+ News ==== * Parse `# type: ...` comments if on Python 3.8+ (jingw, #220). * Bump minimum Python version to 3.6 (Jendrik Seipp, #218). The last Vulture release that supports Python 2.7 and Python 3.5 is version 1.6. * Consider all files under `test` or `tests` directories test files (Jendrik Seipp). * Ignore `logging.Logger.propagate` attribute (Jendrik Seipp). Cheers Jendrik

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Webinar and training about pytest basics (German / Switzerland)
by Florian Bruhin Aug. 11, 2020

Aug. 11, 2020

Hey, (Back in June, I've sent a mail about a pytest workshop I'm giving in September. I'm not sure if it made it through everywhere, as I accidentally used a mail address which wasn't subscribed to the lists I was posting to. Since I also have a second announcement to make, I'm taking the freedom to post another "marketing" mail - after that, things will likely be silent for a while from my side again!) Webinar ------- On August 18th (next week, if you read this mail on the same day I'm writing it), I'm giving a 1h webinar about pytest basics in German: https://mylearning.ch/kurse/online-kurse/tech-webinar/ This is in collaboration with the Institute for Networked Solutions (INS) at a local university (Hochschule Rapperswil / HSR), hence the webinar is in German. If you'd be interested in something similar in English, please let me know - if there's enough interest, I'll repeat it in English at a later point in time. Training -------- On September 8th, I teach a full-day pytest training as part of the CH Open "Workshoptage" in Rotkreuz, Switzerland: https://workshoptage.ch/workshops/2020/pytest-test-driven-development-nicht… Of course COVID-19 is still a concern for the physical training - the organizer allows to cancel your ticket (with a full refund) up to two weeks before the training takes place and also closesly monitors the situation in Switzerland. Would be delighted to see some of you there! :) For the webinar, there should also be a recording available later. Florian -- me(a)the-compiler.org (Mail/XMPP) | https://www.qutebrowser.org https://bruhin.software/ | https://github.com/sponsors/The-Compiler/ GPG: 916E B0C8 FD55 A072 | https://the-compiler.org/pubkey.asc I love long mails! | https://email.is-not-s.ms/

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