Mailman 3 July 2020 - Python-announce-list

EuroPython 2020: Presenting our Conference Booklet
by M.-A. Lemburg 21 Jul '20

21 Jul '20

Our designer Jessica has created a beautiful conference booklet for you to use during the conference and keep as a memory afterwards. It provides all details, schedule, keynotes, sponsor listings, etc. in a single PDF. * EuroPython 2020 Conference Booklet * https://ep2020.europython.eu/events/conference-booklet/ We'd normally give out the booklet as part of the conference bag, but since we’re running the event online, we’ve put up the PDF of the booklet instead for your to enjoy. If you feel like there something in our program which you may benefit from or you just want to get a feeling for what a EuroPython conference is like, please consider joining the event. Tickets still available ----------------------- Even though we have surpassed the 900 tickets mark already, we still have tickets available, both in form of the paid conference & sprint tickets as well as the free sprints-only tickets. Please head over to our registration page to book your tickets: https://ep2020.europython.eu/registration/buy-tickets/ 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/624240002899066880/europython-2020-presenti… Tweet: https://twitter.com/europython/status/1285498603360923656 Thanks, -- EuroPython 2020 Team https://ep2020.europython.eu/ https://www.europython-society.org/

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PyCA cryptography 3.0 released
by Paul Kehrer 20 Jul '20

20 Jul '20

PyCA cryptography 3.0 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, X509, key derivation functions, and much more. We support Python 2.7, Python 3.5+, and PyPy. Changelog (https://cryptography.io/en/latest/changelog/#v3-0): * BACKWARDS INCOMPATIBLE: Removed support for passing an Extension instance to from_issuer_subject_key_identifier(), as per our deprecation policy. * BACKWARDS INCOMPATIBLE: Support for LibreSSL 2.7.x, 2.8.x, and 2.9.0 has been removed (2.9.1+ is still supported). * BACKWARDS INCOMPATIBLE: Dropped support for macOS 10.9, macOS users must upgrade to 10.10 or newer. * BACKWARDS INCOMPATIBLE: RSA generate_private_key() no longer accepts public_exponent values except 65537 and 3 (the latter for legacy purposes). * BACKWARDS INCOMPATIBLE: X.509 certificate parsing now enforces that the version field contains a valid value, rather than deferring this check until version is accessed. * Deprecated support for Python 2. At the time there is no time table for actually dropping support, however we strongly encourage all users to upgrade their Python, as Python 2 no longer receives support from the Python core team. * Added support for OpenSSH serialization format for ec, ed25519, rsa and dsa private keys: load_ssh_private_key() for loading and OpenSSH for writing. * Added support for OpenSSH certificates to load_ssh_public_key(). * Added encrypt_at_time() and decrypt_at_time() to Fernet. * Added support for the SubjectInformationAccess X.509 extension. * Added support for parsing SignedCertificateTimestamps in OCSP responses. * Added support for parsing attributes in certificate signing requests viaget_attribute_for_oid(). * Added support for encoding attributes in certificate signing requests via add_attribute(). * On OpenSSL 1.1.1d and higher cryptography now uses OpenSSL’s built-in CSPRNG instead of its own OS random engine because these versions of OpenSSL properly reseed on fork. * Added initial support for creating PKCS12 files with serialize_key_and_certificates(). -Paul Kehrer (reaperhulk)

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[RELEASE] Python 3.8.5 released as a security hotfix. 3.9.0b5, the last beta before 3.9.0, also available
by Łukasz Langa 20 Jul '20

20 Jul '20

This is a combined release of Python 3.8.5 and 3.9.0b5. Both are significant but for different reasons. Let’s dig in! Security content in 3.8.5 We decided to release 3.8.5 ahead of schedule due to a number of security-related fixes. All details can be found in the change log <https://docs.python.org/release/3.8.5/whatsnew/changelog.html#changelog> but the gist is: CVE-2019-20907 <https://bugs.python.org/issue39017>: infinite loop in a maliciously created .tar file BPO-41288 <https://bugs.python.org/issue41288>: segmentation fault during unpickling of objects using a crafted NEWOBJ_EX opcode BPO-39603 <https://bugs.python.org/issue39603>: HTTP headers could be injected through a maliciously crafter method parameter in http.client the original fix for CVE-2020-15801 caused a regression in 3.8.4 (see: BPO-41304 <https://bugs.python.org/issue41304>) A small number of other urgent regression fixes and quality-of-life improvements are also present in the release. Get the release here: https://www.python.org/downloads/release/python-385/ <https://www.python.org/downloads/release/python-385/> Maintenance releases for the 3.8 series will continue at the regular bi-monthly calendar, with 3.8.6 planned for mid-September 2020. The last beta of Python 3.9.0 now also available Python 3.9 is still in development. This release, 3.9.0b5, is the last of five planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support the new feature release. You can get 3.9.0b5 here: https://www.python.org/downloads/release/python-390b5/ <https://www.python.org/downloads/release/python-390b5/> The next pre-release, the first release candidate of Python 3.9.0, will be 3.9.0rc1. It is currently scheduled for 2020-08-10. Call to action We strongly encourage maintainers of third-party Python projects to test with 3.9 during the beta phase and report issues found to the Python bug tracker <https://bugs.python.org/> as soon as possible. While the release is planned to be feature complete entering the beta phase, it is possible that features may be modified or, in rare cases, deleted up until the start of the release candidate phase (2020-08-10). Our goal is have no ABI changes after beta 5 and as few code changes as possible after 3.9.0rc1, the first release candidate. To achieve that, it will be extremely important to get as much exposure for 3.9 as possible during the beta phase. Please keep in mind that this is a preview release and its use is not recommended for production environments. A reminder for core developers To help make Python 3.9.0 the best possible release, our Development Cycle <https://devguide.python.org/devcycle/#release-candidate-rc> section of the Python Developer’s Guide documents that: A branch preparing for an RC release can only have bugfixes applied that have been reviewed by other core developers. Generally, these issues must be severe enough (e.g. crashes) that they deserve fixing before the final release. All other issues should be deferred to the next development cycle, since stability is the strongest concern at this point. You cannot skip the peer review during an RC, no matter how small! Even if it is a simple copy-and-paste change, everything requires peer review from a core developer. 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/>. (Hey, fellow core developer, if a feature you find important is missing from this list, let Łukasz know <mailto:lukasz@python.org>.) 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. Your friendly release team, Ned Deily @nad <https://discuss.python.org/u/nad> Steve Dower @steve.dower <https://discuss.python.org/u/steve.dower> Łukasz Langa @ambv <https://discuss.python.org/u/ambv>

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EuroPython 2020: Introducing our Diamond Sponsor Bloomberg
by M.-A. Lemburg 20 Jul '20

20 Jul '20

We are very pleased to have Bloomberg as Diamond Sponsor for EuroPython 2020. Without sponsors like Bloomberg, we wouldn't be able to make the event affordable. You will be able to visit their sponsor exhibit rooms and take the opportunity to chat with their staff to learn more about the large Python eco-system they have built internally and how they are collaborating with the Python community. Please read a hosted blog post from Bloomberg on our blog with full detail: https://blog.europython.eu/post/624164489818980352/europython-2020-introduc… 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/624164489818980352/europython-2020-introduc… Tweet: https://twitter.com/europython/status/1285198014060154882 Thanks, -- EuroPython 2020 Team https://ep2020.europython.eu/ https://www.europython-society.org/

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EuroPython 2020: Find a new job at the conference
by M.-A. Lemburg 17 Jul '20

17 Jul '20

We’d like to draw your attention to our job board, with plenty of job ads from our sponsors: * EuroPython 2020 Job Board * https://ep2020.europython.eu/sponsor/job-board/ Our sponsors would love to get in touch with you, so please have a look and visit them at their sponsor exhibit channel on Discord or contact them via the links and email addresses given on the page. Job ad emails ------------- We will also send out job ad emails to attendees who have agreed to receiving these emails. If you are interested, please log in, go to your profile and enable the recruiting email option in the privacy section: https://ep2020.europython.eu/user-panel/privacy-settings/ Note that we will not give your email addresses to sponsors, but only send out these emails on behalf of them. 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/623783726150778880/europython-2020-find-a-n… Tweet: https://twitter.com/europython/status/1283720815146565632 Thanks, -- EuroPython 2020 Team https://ep2020.europython.eu/ https://www.europython-society.org/

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Python Certification Training
by Thomas Edison 16 Jul '20

16 Jul '20

What is Python? Python is a high-level, object-oriented, interpreted programming language with dynamic semantics. High level integrated data structures combined with dynamic writing and dynamic linking make it very attractive to use applications as a scripting language or glue for combining existing components as well as rapidly developing applications. The simple and easy-to-learn Python syntax emphasizes readability and therefore reduces the maintenance cost of the program. Python supports modules and packages that contribute to program modularity and code reuse. The Python interpreter and the extensive standard library are available in free binary or source format for all major platforms and are free to distribute. Programmers often fall in love with Python because of the increased performance it provides. Since there is no compile step, the edit-test-debug cycle is incredibly fast. Debugging in Python programs is simple: an error or misspelling never causes a segmentation error. Instead, it throws an exception when the interpreter detects an error. When the program does not catch the exception, the interpreter prints a stack trace. The source code level debugger allows you to control local and global variables, evaluate random expressions, set breakpoints, progress code line by line, etc. Allows. The debugger is written in Python and proves Python's insightful power. On the other hand, the fastest way to debug a program is to add some print expressions to the source: the quick editing, testing, and debug loop makes this simple approach very effective. Find out more at the Website: https://mindmajix.com/python-training

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ANN: psutil 5.7.1 released
by Giampaolo Rodola' 15 Jul '20

15 Jul '20

Hello all, I'm glad to announce the release of psutil 5.7.1: 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, both 32-bit and 64-bit architectures. Supported Python versions are 2.6, 2.7 and 3.4+. PyPy is also known to work. What's new ========== 2020-07-15 **Enhancements** - #1729: parallel tests on UNIX (make test-parallel). They're twice as fast! - #1741: "make build/install" is now run in parallel and it's about 15% faster on UNIX. - #1747: `Process.wait()` on POSIX returns an enum, showing the negative signal which was used to terminate the process:: >>> import psutil >>> p = psutil.Process(9891) >>> p.terminate() >>> p.wait() <Negsignal.SIGTERM: -15> - #1747: `Process.wait()` return value is cached so that the exit code can be retrieved on then next call. - #1747: Process provides more info about the process on str() and repr() (status and exit code):: >>> proc psutil.Process(pid=12739, name='python3', status='terminated', exitcode=<Negsigs.SIGTERM: -15>, started='15:08:20') - #1757: memory leak tests are now stable. - #1768: [Windows] added support for Windows Nano Server. (contributed by Julien Lebot) **Bug fixes** - #1726: [Linux] cpu_freq() parsing should use spaces instead of tabs on ia64. (patch by Michał Górny) - #1760: [Linux] Process.rlimit() does not handle long long type properly. - #1766: [macOS] NoSuchProcess may be raised instead of ZombieProcess. - #1781: fix signature of callback function for getloadavg(). (patch by Ammar Askar) 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 -- Giampaolo - https://gmpy.dev/about

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Wing Python IDE 7.2.3 has been released
by Wingware 15 Jul '20

15 Jul '20

Wing 7.2.3 has been released. This update introduces a How-To for using Wing with PyXLL, adds folding in .pyi and .pi files, fixes opening files from the macOS Catalina Finder, and makes many usability improvements. For details see the change log: https://wingware.com/pub/wingpro/7.2.3.0/CHANGELOG.txt == New features in Wing 7.2 include == * Auto-Reformatting with Black and YAPF (Wing Pro) Wing 7.2 adds support for Black and YAPF for code reformatting, in addition to the previously available built-in autopep8 reformatting. To use Black or YAPF, they must first be installed into your Python with pip, conda, or other package manager. Reformatting options are available from the Source > Reformatting menu group, and automatic reformatting may be configured in the Editor > Auto-reformatting preferences group. Details: https://wingware.com/doc/edit/auto-reformatting * Improved Support for Virtualenv Wing 7.2 improves support for virtualenv by allowing the command that activates the environment to be entered in the Python Executable in Project Properties, Launch Configurations, and when creating new projects. The New Project dialog now also includes the option to create a new virtualenv along with the new project, optionally specifying packages to install. Details: https://wingware.com/doc/howtos/virtualenv * Support for Anaconda Environments Similarly, Wing 7.2 adds support for Anaconda environments, so the conda activate command can be entered when configuring the Python Executable and the New Project dialog supports using an existing Anaconda environment or creating a new one along with the project. Details: https://wingware.com/doc/howtos/anaconda * And More Wing 7.2 also introduces How-Tos for using Wing with AWS and PyXLL, makes it easier to debug modules with python -m, adds support for Python 3 enums, simplifies manual configuration of remote debugging, allows using a command line for the configured Python Executable, supports constraining Find Uses of imported symbols to only the current file, allows folding .pyi and .pi files, and makes a number of usability and stability improvements. For a complete list of new features in Wing 7, see What's New in Wing 7: https://wingware.com/wingide/whatsnew == Downloads == Wing Pro: https://wingware.com/downloads/wing-pro/7.2/binaries Wing Personal: https://wingware.com/downloads/wing-personal/7.2/binaries Wing 101: https://wingware.com/downloads/wing-101/7.2/binaries Compare products: https://wingware.com/downloads See https://wingware.com/doc/install/upgrading for details on upgrading from Wing 6 and earlier, and https://wingware.com/doc/install/migrating for a list of compatibility notes.

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ANN: soops 2020.2
by Robert Cimrman 14 Jul '20

14 Jul '20

Hi all, I am pleased to announce the release of soops 2020.2. soops = scoop output of parametric studies The package contains functions to run parametric studies in parallel using Dask, and to scoop the output files produced by the studies into a Pandas DataFrame. The latest release can be installed using pip: pip install soops Git repository: https://github.com/rc/soops.git Best regards, Robert Cimrman

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[RELEASE] Python 3.8.4 is now available
by Łukasz Langa 13 Jul '20

13 Jul '20

Python 3.8.4 is the fourth maintenance release of Python 3.8. Go get it here: https://www.python.org/downloads/release/python-384/ <https://www.python.org/downloads/release/python-384/> Maintenance releases for the 3.8 series will continue at regular bi-monthly intervals, with 3.8.5 planned for mid-September 2020. What’s new? The Python 3.8 series is the newest feature release of the Python language, and it contains many new features and optimizations. See the “What’s New in Python 3.8 <https://docs.python.org/3.8/whatsnew/3.8.html>” document for more information about features included in the 3.8 series. This is the first bugfix release that is considerably smaller than the previous three. There’s almost 20% fewer changes at 162 commits than the average of previous three bugfix releases. Detailed information about all changes made in version 3.8.4 specifically can be found in its change log <https://docs.python.org/release/3.8.4/whatsnew/changelog.html#python-3-8-4-…>. Note that compared to 3.8.3, version 3.8.4 also contains the changes introduced in 3.8.4rc1. We hope you enjoy Python 3.8! 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. Your friendly release team, Ned Deily @nad <https://discuss.python.org/u/nad> Steve Dower @steve.dower <https://discuss.python.org/u/steve.dower> Łukasz Langa @ambv <https://discuss.python.org/u/ambv>

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