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Python Programming

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  • Multiple Selections in Wing Python IDE

    In this issue of Wing Tips we revisit how to use multiple concurrent selections in Wing's editor. These can be used to replace all occurrences of some text or to apply the same edits to any number of selections, for example surround them all with quotes or remove common surrounding characters. Multiple selections can be created from the keyboard, from the mouse, or by using commands that select all occurrences of some text found within a selected code.

  • Python 3.9 is around the corner

    Python 3.9.0rc2 was released on September 17, with the final version scheduled for October 5, roughly a year after the release of Python 3.8. Python 3.9 will come with new operators for dictionary unions, a new parser, two string operations meant to eliminate some longstanding confusion, as well as improved time-zone handling and type hinting. Developers may need to do some porting for code coming from Python 3.8 or earlier, as the new release has removed several previously-deprecated features still lingering from Python 2.7.

    Python 3.9 marks the start of a new release cadence. Up until now, Python has done releases on an 18-month cycle. Starting with Python 3.9, the language has shifted to an annual release cycle as defined by PEP 602 ("Annual Release Cycle for Python").

    A table provided by the project shows how Python performance has changed in a number of areas since Python 3.4. It is interesting to note that Python 3.9 is worse than 3.8 on almost every benchmark in that table, though it does perform generally better than 3.7. That said, it is claimed that several Python constructs such as range, tuple, list, and dict will see improved performance in Python 3.9, though no specific performance benchmarks are given. The boost is credited to the language making more use of a fast-calling protocol for CPython that is described in PEP 590 ("Vectorcall: a fast calling protocol for CPython").

  • Tryton News: Newsletter October 2020

    We are now on the home straight leading up to the 5.8 release. However, there will be some more changes over the next few weeks.

  • Check Web App Security With Bandit - Building SaaS #74

    In this episode, I integrated the bandit static analysis tool to do automated security checking of my code before each commit. We talked about pre-commit and how to add in a new hook. After finishing that tool addition, we got deep into Django while removing some messages inserted by django-allauth on sign up.

    We began by talking about what the bandit tool does and how it works. Once I explained bandit, I focused on the bandit documentation to see how to add the tool. We found the pre-commit config hook in the bandit README docs.

  • Simple in-memory ChEMBL similarity search

    In the previous two essays I showed how to search chembl_27.fps to find records with similar fingerprints to a query fingerprint, then how to implement a nearest-neighbor search and replace Tanimoto similarity with cosine similarity. The final program took about 5 seconds.

    In this essay I'll show how to increase the search performance by shifting more of the work to a load step. This sort of precomputation can be useful if the load step is done once, with the extra overhead shared over multiple searches.

More in Tux Machines

today's howtos

  • How to install CentOS 8 workstation

    CentOS is a rock-solid, reliable Linux distribution similar to Debian, but with RPMs and RedHat technology rather than DEB and Debian tech. It’s used a lot on servers, but did you know that you can also use it as a desktop Linux distribution?

  • Adding a USB Datastore and Creating a VM on ESXi on Arm -- Virtualization Review

    I downloaded the Ubuntu 20.04 LTS iso and used SCP to copy it over to the USB drive on my ESXi server. I also used the host client to create a 3 vCPU, 2GB RAM VM on it. I started the VM, opened a console to it, and installed Ubuntu by using the defaults. This took longer than it did on my x86 servers, but it did get created nevertheless, and I was able to use the console and SSH to access it.

  • How to install Minecraft on Deepin 20 - YouTube
  • TCP Analysis with Wireshark | Linux Journal

    Transmission Control is an essential aspect of network activity and governs the behavior of many services we take for granted. When sending your emails or just browsing the web you are relying on TCP to send and receive your packets in a reliable fashion. Thanks to two DARPA scientists, Vinton Cerf and Bob Kahn who developed TCP/IP in 1970, we have a specific set of rules that define how we communicate over a network. When Vinton and Bob first conceptualized TCP/IP, they set up a basic network topology and a device that can interface between two other hosts.

WordPress 5.6 Second Beta and WordPress Survey

  • News – WordPress 5.6 Beta 2 – WordPress.org

    WordPress 5.6 beta 2 is now available for testing! This software is still in development, so we recommend that you run this version on a test site.

  • News – Take the 2020 WordPress Annual Survey (and view the 2019 results)! – WordPress.org

    For many years, WordPress enthusiasts have filled out an annual survey to share their experiences and feelings about WordPress. Interesting results from this survey have been shared in the annual State of the Word address and/or here on WordPress News. This survey helps those who build WordPress understand more about how the software is used, and by whom. The survey also helps leaders in the WordPress open source project learn more about our contributors’ experience. To ensure that your WordPress experience is represented in the 2020 survey results, Take the 2020 Annual Survey! (English) You can also take the survey in French, German, Japanese, Russian, and Spanish! The survey will be open for at least 6 weeks, and results will be posted on this blog. [...] The WordPress Professionals group consists of those who: work for a company that designs/develops websites; use WordPress to build websites and/or blogs for others; design or develop themes, plugins, or other custom tools for WordPress sites; or are a designer, developer, or other web professional working with WordPress. This WordPress Professionals group is further divided into WordPress Company Pros (those who work for a company that designs/develops websites) and WordPress Freelancers/Hobbyists (all other professional types) subgroups.

FreeBSD 12.2

  • FreeBSD 12.2-RELEASE Announcement

    The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 12.2-RELEASE. This is the third release of the stable/12 branch.

  • October 2020

    27 October: FreeBSD 12.2-RELEASE is now available. Please be sure to check the Release Notes and Release Errata before installation for any late-breaking news and/or issues with 12.2. More information about FreeBSD releases can be found on the Release Information page.

Also: This summer in KDE-FreeBSD | [bobulate]

Games: Stadia, Graveyard Keeper and Wildermyth

  • Stadia Pro for November has Sniper Elite 4, Risk of Rain 2, Republique and new releases | GamingOnLinux

    Google has announced the latest set of Stadia Pro games, along with new titles about to release like Sekiro: Shadows Die Twice and Watch Dogs: Legion. PLUS news of Ubisoft+ coming to Stadia soon. What is Stadia? A quick primer for people not following: it's a game streaming service that uses Debian Linux under the hood along with the Vulkan graphics API. Playable on Linux in Chromium / Chrome browsers. You can either buy games, or subscribe to Stadia Pro to claim games each month (or do both).

  • Graveyard Keeper - Game Of Crone expansion is out now | GamingOnLinux

    Graveyard Keeper - Game Of Crone is an expansion to the medieval graveyard building and management sim that's like a morbid take on Stardew. This fresh expansion adds in another bunch of hours (6-12 they said approximately) to play through, along with a whole new story to follow where you help a bunch of escaped prisoners build up a camp. "You’ll have to help the escaped prisoners of the Inquisition survive in the wilderness by providing them with everything they need. To develop their camp to a fortified settlement while keeping in mind its benefits. To protect those who entrusted you with their lives, from the sword and fire. And also - to untangle the circumstances of the cruel game, which turned into the Great Blast and the return of the Ancient Curse."

  • Papercraft styled tactical-RPG 'Wildermyth' has a big new campaign out | GamingOnLinux

    Wildermyth is the character-driven, procedurally-generated tactical RPG with an art style resembling papercraft and it's brilliant. Now it's also bigger with a big campaign update out. In Wildermyth you play through various generated campaigns, each of which mixes things up like characters and events and so every play-through is different. You're supposed to see it as something resembling a classic tabletop RPG experience. Mixing together a party-based RPG with overworld exploration, random events and tactical turn-based combat there's a lot to love about it.

  • Godot Web export progress report #3

    Howdy Godotters! It's-a me! Fabio! It is time for an update on the Godot export for the Web. In the last few months, a lot has been going on regarding the Godot export for the Web. Most of the enhancements mentioned in the previous report have now been merged into the master branch, and backported to 3.2 (included in 3.2.4 beta 1). This sadly does not yet include the virtual keyboard support, since implementing it without impacting the experience on touchscreen-enabled devices that also have a physical keyboard has proven harder than expected. There is great news, though, on the other topic mentioned in that report, which is... GDNative support on HTML5 exports! Additionally, a new prototype version of the Godot Web Editor is now available for you to try out.