Mailman 3 September 2020 - Python-announce-list

ANN: pvlib-0.8.0 python package for solar energy modeling
by Dr. Mark Alexander Mikofski PhD Sept. 9, 2020

Sept. 9, 2020

Dear Pythonistas and Solar Energy enthusiasts, I am very happy to announce a new, major release of pvlib python, for simulating the performance of photovoltaic solar energy systems. *See what's new for v0.8.0:* * https://pvlib-python.readthedocs.io/en/stable/whatsnew.html *Releases are available from the CheeseShop and the conda-forge channel:* * https://pypi.org/project/pvlib/ * https://anaconda.org/conda-forge/pvlib-python *Read the Documentation:* * https://pvlib-python.readthedocs.io/en/stable/index.html *Report issues & contribute:* * https://github.com/pvlib/pvlib-python *Highlights:* * Because this is a major release, there are many breaking changes so please read through the release notes carefully before updating * Python-3.5 is no longer supported, SciPy-1.2.0 is now a required dependency, and the Pandas minimum version is now v0.22.0 * New functions for calculation of sky-diffuse irradiance, fitting PV module IV-curve traces to single-diode model coefficients, and accommodating terrain slope when backtracking. * Many new contributors, bug fixes, and improvements in the documentation. * Also coming soon, AirSpeed Velocity benchmarks. Stay tuned! *The development team thanks you for using pvlib python!* -- Mark Mikofski, PhD (2005) *Fiat Lux*

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[RELEASE] Python 3.8.6rc1 is now ready for testing
by Łukasz Langa Sept. 8, 2020

Sept. 8, 2020

Python 3.8.6rc1 is the release candidate of the sixth maintenance release of Python 3.8. Go get it here: https://www.python.org/downloads/release/python-386rc1/ <https://www.python.org/downloads/release/python-386rc1/> Assuming no critical problems are found prior to 2020-09-21, the scheduled release date for 3.8.6, no code changes are planned between this release candidate and the final release. That being said, please keep in mind that this is a pre-release and as such its main purpose is testing. Maintenance releases for the 3.8 series will continue at regular bi-monthly intervals, with 3.8.7 planned for mid-November 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. Python 3.8 is becoming more stable. Our bugfix releases are becoming smaller as we progress. This one contains 80 changes, not even a half of what we got in 3.8.4 (the following release was a hotfix). Detailed information about all changes made in version 3.8.6 specifically can be found in its change log <https://docs.python.org/release/3.8.6rc1/whatsnew/changelog.html#python-3-8…>. 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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attrs 20.2.0
by Hynek Schlawack Sept. 8, 2020

Sept. 8, 2020

Hi everyone, I’m happy to (somewhat belatedly) announce the release of attrs 20.2.0. attrs is the direct ancestor of dataclasses in the standard library and remains the most powerful option for creating regular classes without getting bogged down with writing identical boilerplate again and again: https://www.attrs.org/ Heartfelt thanks to my generous sponsors <https://github.com/sponsors/hynek>, companies subscribing on Tidelift <https://tidelift.com/subscription/pkg/pypi-attrs>, and people who bought me a coffee on <https://ko-fi.com/the_hynek>! Support like that makes me merge PRs and release software on a Saturday afternoon! <3 --- This release fixes a bunch of bugs in the new APIs and a few regressions that were introduced in the HUGE 20.1.0 release (if you’ve missed it, check out the announcement here: <https://gist.github.com/hynek/1e3844d0c99e479e716169034b5fa963>): Backward-incompatible Changes - attr.define(), attr.frozen(), attr.mutable(), and attr.field() remain provisional. This release fixes a bunch of bugs and ergonomics but they remain mostly unchanged. If you wish to use them together with mypy, you can simply drop this plugin into your project. Feel free to provide feedback to them in the linked issue #668. We will release the attrs namespace once we have the feeling that the APIs have properly settled. #668 Changes - attr.define() et al now correct detect __eq__ and __ne__. #671 - attr.define() et al's hybrid behavior now also works correctly when arguments are passed. #675 - It's possible to define custom __setattr__ methods on slotted classes again. #681 - In 20.1.0 we introduced the inherited attribute on the attr.Attribute class to differentiate attributes that have been inherited and those that have been defined directly on the class. It has shown to be problematic to involve that attribute when comparing instances of attr.Attribute though, because when sub-classing, attributes from base classes are suddenly not equal to themselves in a super class. Therefore the inherited attribute will now be ignored when hashing and comparing instances of attr.Attribute. #684 - zope.interface is now a "soft dependency" when running the test suite; if zope.interface is not installed when running the test suite, the interface-related tests will be automatically skipped. #685 - The ergonomics of creating frozen classes using @define(frozen=True) and sub-classing frozen classes has been improved: you don't have to set on_setattr=None anymore. #687 The full changelog can be found at <https://www.attrs.org/en/stable/changelog.html>. Cheers, —h

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PyCon India 2020 Keynote: Alolita Sharma
by Sayan Chowdhury Sept. 8, 2020

Sept. 8, 2020

Hi everyone, We are pleased to announce Alolita Sharma as the second Keynote Speaker of PyCon India 2020. About Alolita ------------- Alolita Sharma is a Principal Technologist at Amazon Web Services. She leads open source strategy and engineering for projects focused on observability and search including OpenTelemetry, Prometheus, Grafana, Apache Lucene and Open Distro for Elasticsearch. Two decades of doing open source continue to inspire her. Alolita has built and led engineering teams at Wikipedia, Twitter, PayPal and IBM. Alolita is passionate about language technologies that enable everyone to participate in the Web's information revolution. She serves on the board of Unicode Consortium and is an invited expert on W3C and ECMA workgroups. She has served on the boards of the Open Source Initiative (OSI) and SFLC.in. You can find her on Twitter: @alolita. Please retweet the announcement to reach to all the interested parties[0] https://twitter.com/pyconindia/status/1303297549978275840 -- Sayan Chowdhury On behalf of PyCon India 2020 Team https://in.pycon.org/2020/

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PyDev 8.0 Released
by Fabio Zadrozny Sept. 6, 2020

Sept. 6, 2020

PyDev 8.0 Release Highlights - *MyPy* - Make sure that only one MyPy is running at a given time (to prevent cache corruptions). - Properly report MyPy messages that only have a line number. ( *#PyDev-1091*) - MyPy integration now also shows notes for a message. (*#PyDev-1088*) - *Debugger* (updated to pydevd 2.0.0) - The frame evaluation mode (which adds programmatic breakpoints by rewriting bytecode) was redone (it had a critical issue which could make it skip breakpoints). - Fixed issue collecting try..except information. - Fixed issue evaluating numpy array with unexpected dimension. - *Type Inference* - Option to create a method at a given class properly considers type-hinting. (*#PyDev-1092*) - Support code-completion for Optional[]. (*#PyDev-1089*) - Properly handle type information when given as a string. ( *#PyDev-1082*, *#PyDev-1087*) - Fixed issue where line/col was not forwarded properly in go to definition. (*#PyDev-1075*) - Typing info should have priority when available. (*#PyDev-1079*) - Properly get completions considering function annotation. ( *#PyDev-1078*) - *Test running* - Fixed issue running tests which override *address* with nose. ( *#PYDev-1095*) - Fixed issue where test import/export didn't deal well with binary chars that were collected from the test. (*#PyDev-1067*) - *Others* - When finding a file in a project on Windows consider paths as case insensitive. - .mypy_cache and .pytest_cache contents are now marked as derived (so they can be filtered out in searches). - Fixed case where auto-import could be added to wrong location. ( *#PyDev-1085*) - Occurrence was not found in type hint return. (*#PyDev-1076*) - Find references not working for constant depending how it's used. ( *#PyDev-1083*) - Backported fix to properly parse raw f-string in Python 3.6. ( *#PyDev-991*) - Code completion inside f-strings. (*#PyDev-1081*) About PyDev PyDev is an open-source Python IDE on top of Eclipse for Python, Jython and IronPython development, now also available for Python on Visual Studio Code. It comes with goodies such as code completion, syntax highlighting, syntax analysis, code analysis, refactor, debug, interactive console, etc. It is also available as a standalone through LiClipse with goodies such as multiple cursors, theming and support for many other languages, such as Django Templates, Jinja2, Html, JavaScript, etc. Links: PyDev: http://pydev.org PyDev Blog: http://pydev.blogspot.com PyDev on VSCode: http://pydev.org/vscode LiClipse: http://www.liclipse.com PyVmMonitor - Python Profiler: http://www.pyvmmonitor.com/ Cheers, Fabio Zadrozny

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PyCon India 2020: The Schedule Outline
by Sayan Chowdhury Sept. 6, 2020

Sept. 6, 2020

Hi everyone, CFP & Review ------------ The CFP Working Group (WG) did a great job of reaching out to speakers and achieving a good number of talk proposals. The Review Panel WG volunteers worked parallelly to get the proposals as complete as possible as per the guidelines we built before the Subject Matter Expert (SME) aka Talk Reviewers started the process. Thanks to the whole Reviewers team for putting their thought and effort into each talk. As of today, based on the reviews of the proposals, the first set of selected speakers has been created. The team will start reaching out to all these speakers, to prepare the final list. The date for the final schedule to be published still stands at 15th September 2020. Schedule Outline of PyCon India 2020 ------------------------------------ This year, since we have gone online, the number of talks and registration outside India is substantially high. So, the team has decided to start the event at noon and end at 8:00 PM IST. This will help us to accommodate other timezones as well and not moving much from our core time. The schedule outline (the mentioned time is in IST): 12:00 - 12:10 - Opening Session of the day 12:15 - 13:15 - Keynote 13:20 - 13:50 - Talk Slot 13:55 - 14:25 - Talk Slot 14:30 - 15:20 - Break / Networking 15:20 - 15:50 - Talk Slot 15:55 - 16:25 - Talk Slot 16:30 - 17:30 - Keynote 17:30 - 17:50 - Break / Networking 17:50 - 18:20 - Talk Slot 18:25 - 18:55 - Talk Slot 19:00 - 20:00 - Keynote 20:00 - 20:05 - Closing session for the day 20:05 - 20:30 - Networking The `Talk Slot`s are 30 min slot which would have talks, lightning talks, and sponsored talks. This will be replicated for all the stages, except for the Keynote slots. This year the team also plans to have 4 parallel tracks, and one track dedicated for just *Advanced* talks. Once the schedule is prepared, an update will be shared detail about how the talks will be placed across the stages/ or sessions. Though this schedule is tentative and what the whole team is following, minor updates might be done to accommodate speakers or sponsors. --- Miscellaneous info ------------------ Tickets ------- The PyCon India 2020 tickets are open but we are selling out fast. So, if you haven't booked the tickets, please head over to the website and get your tickets. We need your help ----------------- This year, we've been very highly active on Zulip[1]. As we move closer to the event, we would like your support and help to make this happen successfully. We have ample work where we need a volunteer, so please join us on Zulip and ping on the main channel. The Promotions WG needs a helping hand, so if you interested please follow the instructions Sponsorship ----------- The Call for Sponsors[2] is open, and we've some good packages with amazing benefits. You can visit the sponsorship page or write to us at sponsor(a)in.pycon.org, and we will revert. Please share the ticket announcement to that it reaches more in the community. https://twitter.com/pyconindia/status/1298222867935444992 [1] https://pyconindia.zulipchat.com/ [2] https://in.pycon.org/2020/sponsorship/ -- Sayan Chowdhury <https://yudocaa.in/> On behalf of PyCon India 2020 Team https://in.pycon.org/2020/

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PyCon India 2020: The Platform
by Sayan Chowdhury Sept. 5, 2020

Sept. 5, 2020

Hi everyone, PyCon India 2020 edition would be happening online and of the biggest challenges the team faced was finding the platform which suits our needs. We've looked through a lot of conference tools, ideas, and way to make the event an amazing one. The main goal in front of us to make the event as interactive as possible and as close to the offline version as possible The team after much review and thought has decided to go with the platform, Hopin[1] Hopin ----- Hopin is an all-in-one virtual platform, where the primary mode of interaction is audio-video or chat. Over the last few months, a lot of conferences has been organized on the platform and scale at which they are operating is amazing. The platform provides with Stages, to present keynotes and talks. Session area for our open spaces, hallways, and any other impromptu sessions that need to be created. It also has an Expo area for the sponsors to interact with the participants, where they can accommodate their mini session. The booths in the Expo are very much like the one in the offline setting. Networking is a good part of Hopin, where you can either do a 1x1 random matching session with folks, or folks can create their private session to replicate the group discussion. Last two things to point is, documentation and support. Documentation of the platform is quite in-depth. BangPypers Talks - Road to PyCon India 2020 -------------------------------------------- The Hopin Platform was finalized a couple of days back, but today the BangPypers team hosted the meetup on the platform. The event was a smooth sailing other a couple of initial hiccups. The event had 4 talks, which went smoothly. A big thanks to the BangPypers team. --- Tickets ------- The PyCon India 2020 tickets are open but we are selling out fast. So, if you haven't booked the tickets, please head over to the website and get your tickets. We need your help -------------------- This year, we've been very highly active on Zulip[2]. As we move closer to the event, we would like your support and help to make this happen successfully. We have ample work where we need a volunteer, so please join us on Zulip and ping on the main channel. Sponsorship ------------ The Call for Sponsors[3] is open, and we've some good packages with amazing benefits. You can visit the sponsorship page or write to us at sponsor(a)in.pycon.org, and we will revert. Please share the ticket announcement to that it reaches more in the community. https://twitter.com/pyconindia/status/1298222867935444992 [1] https://hopin.to/ [2] https://pyconindia.zulipchat.com/ [3] https://in.pycon.org/2020/sponsorship/ -- Sayan Chowdhury <https://yudocaa.in/> On behalf of PyCon India 2020 Team https://in.pycon.org/2020/

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[RELEASED] Python 3.5.10 is released
by Larry Hastings Sept. 5, 2020

Sept. 5, 2020

On behalf of the Python development community, I'm plesed to announce the availability of Python 3.5.10. 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. Python 3.5 will reach its "end of life" at the end of September 2020. If there are no security patches filed for Python 3.5 after the release of Python 3.5.10, then Python 3.5.10 will be the final release of the 3.5 series. You can find Python 3.5.10 here: https://www.python.org/downloads/release/python-3510/ Cheers, //arry/

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PyCon India 2020 Keynote: Naomi Ceder
by Sayan Chowdhury Sept. 4, 2020

Sept. 4, 2020

Hi everyone, We are pleased to announce Naomi Ceder as the first Keynote Speaker of PyCon India 2020. About Naomi ----------- Naomi Ceder earned a Ph.D in Classics several decades ago but switched from ancient human languages to computer languages sometime in the last century. Since 2001, she has been learning, teaching, writing about, and using Python. An elected fellow of the Python Software Foundation, Naomi is the immediate past chair of its board of directors. She also speaks internationally about the Python community, and on inclusion and diversity in technology in general. By day she leads a team of Python programmers for Dick Blick Art Materials, and in her spare time, she enjoys sketching, knitting, and deep philosophical conversations with her dog. She can be reached at her Twitter handle: @NaomiCeder Please retweet the announcement to reach to all the interested parties[0] [0] https://twitter.com/pyconindia/status/1301484301125447682 -- Sayan Chowdhury On behalf of PyCon India 2020 Team https://in.pycon.org/2020/

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MySimpleGUI version 1.1.6 released
by Ruud van der Ham Sept. 2, 2020

Sept. 2, 2020

I am glad to announce the release of MySimpleGUI version 1.1,6: GitHub <https://github.com/salabim/MySimpleGUI>salabim/MySimpleGUI <https://github.com/salabim/MySimpleGUI> Enhancement for PySimpleGUI as an addon module. Contribute to salabim/MySimpleGUI development by creating an account on GitHub. MySimpleGUI is an extension to the popular PySimpleGUI (see https://github.com/PySimpleGUI/PySimpleGUI) package, which adds functionality and significantly changes exception handling, making it more Pythonic and facilitates debugging of GUIs. Major additions: - Attribute notation to *Window* and the *values parameter as returned from Window.read()*, e.g. import MySimpleGUI as sg layout = [[sg.Text('Your typed chars appear here:'), sg.Text(size=(15,1), key='output')], [sg.Input(key='input')], [sg.Button('Show'), sg.Button('Exit')]] window = sg.Window('Pattern 2B', layout) while True: # Event Loop event, values = window.read() if event == sg.WIN_CLOSED or event == 'Exit': break if event == 'Show': window.output.update(values.in)window.close() - A Multiline element can now be used as a file. That means, a user program can use the write function, but more importantly, can also use the print builtin, like print("This is a test", file=window.mymultiline) Multiline elements can be closed and flushed as ordinary files. That also opens the door to more Pythonic redirections of stdout and stderr. - And Multiline files support ANSI colours, both for foreground and background colours. The escape sequences associated with the various colours can be used as such but also via the ansi dict like data structure. So, we can now do: import MySimpleGUI as sg from MySimpleGUI import ansi ... window = [[sg.Multiline, size=(80, 10), key="results"]] print(f"colour {ansi.red} red {ansi.onred}{ansi.white} red on white {ansi.reset}", file=window.results) print(f"still red on white {ansi.reset}{ansi.green} green", file=window.result) - ANSI colours are also supported as the initial contents of Multiline and PopupScrolled. - MySimpleGUI provided functions to get/set the globals that can be normally only be defined with SetOptions: The value of a global variable can be retrieved by calling the function without an argument, like current_message_box_line_with = sg.message_box_line_width() The value of a global variable can be set by calling the function with the new value as its argument, like sg.message_box_line_width(20) And it is possible to use the function with an argument as a context manager. In that case, the global variable will be restored after finishing the context manager: with sg.message_box_line_width(20): sg.Popup("Hey, this is much more narrow than usual!") sg.Popup("And now it's back to the usual 60 characters width, isn't it?") - MySimpleGUI can print Elements, Columns and Windows in a nice format, which can be very useful for debugging and just getting to know what MySimpleGUI/PySimpleGUI does internally. MySimpleGUI is implemented as an add-on that actually patches an existing PySimpleGUI installation (*source code injection*). This means that future versions of PySimpleGUI will be automatically supported.

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