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Programming: Python, PHP and Usenet

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Development

  • Python's None: Null in Python

    If you have experience with other programming languages, like C or Java, then you’ve probably heard of the concept of null. Many languages use this to represent a pointer that doesn’t point to anything, to denote when a variable is empty, or to mark default parameters that you haven’t yet supplied. null is often defined to be 0 in those languages, but null in Python is different.

    Python uses the keyword None to define null objects and variables. While None does serve some of the same purposes as null in other languages, it’s another beast entirely. As the null in Python, None is not defined to be 0 or any other value. In Python, None is an object and a first-class citizen!

  • More capabilities for remote development with the R plugin

    It has been a long time since our previous update. This release of the R plugin comes with enhancements and stability improvements as well as with the new features for remote work. Also, in this release, we discontinue supporting R 3.3.

    R plugin introduces the new type of the R interpreters, so that you can execute your R scripts remotely. Consider a task when you write your R code on one machine and need to execute it on another.

  • Early Access PyCharm Podcast — With Nafiul Islam

    Welcome to Early Access PyCharm, a brand-new podcast that goes behind the scenes of how the PyCharm IDE is made and all the thinking that goes into it. In the upcoming episodes, you will hear from the people who work daily to make you more productive and your code even better.

  • A Hundred Days of Code, Day 020 - Setting up an Editor for Python Development

    Had given myself a day, to see if I could get a good Python development environment using Elpy and Emacs.
    It does work.
    Just not well enough for me.
    At the end of the day today, I was happy I learnt so much about Emacs.
    But that is not my focus right now. Python is.
    Emacs knowledge can come slowly and organically.

  • Modern Python Cookbook 2nd ed -- Advance Copies -- DM me

    I'll be putting you in contact with Packt marketing folks who will get you your advanced copy so you can write blurbs and reviews and -- well -- actually use the content.

    It's all updated to Python 3.8. Type hints almost everywhere. F-strings and the walrus operator. Bunches of devops and data science examples. Plus a few personal examples involving sailboat navigation and management.

    See me at LinkedIn https://www.linkedin.com/in/steven-lott-029835/ and I'll hook you up with Packt marketing folks.

  • Named arguments squeak into PHP 8.0, 7 years after first RFC

    The next major version of the PHP language will support named arguments after 76 per cent of lead developers voted to include it.

    PHP 8.0 is now expected to be released in November 2020 and feature freeze is on 4 August. The RFC (Request For Comments) for Named Arguments was submitted in September 2013 but revived for the PHP 8.0 release. Approval required a two-thirds majority. There is a pull request for a partial implementation, but it seems there is a fair amount of work still to do.

  • Some Usenet groups suspended in Goggle Groups 1 Reply

    Over the last few days, a number of Usenet groups have been banned. The two that I am aware of are comp.lang.lisp and comp.lang.forth, two programming languages groups in the Usenet comp hierarchy. This is the message I see;

    Banned content warning
    comp.lang.forth has been identified as containing spam, malware, or other malicious content.

    For more information about content policies on Google Groups see our Help Center article on abuse and our Terms of Service.

    As with most of Usenet, the comp.* hierarchy is largely unmoderated. These two groups definitely are, so this is a Google action to ban them and not one of moderation, since there aren't any moderators. It's unclear how these groups have breached the rules.

    Of specific concern is the archive. These are some of the oldest groups on Usenet, and the depth & breadth of the historical material that has just disappeared from the internet, on two seminal programming languages, is huge and highly damaging. These are the history and collective memories of two communities that are being expunged, and it's not great, since there is no other comprehensive archive after Google's purchase of Dejanews around 20 years ago.

  • Historical programming-language groups disappearing from Google

    As Alex McDonald notes in this support request, Google has recently banned the old Usenet groups comp.lang.forth and comp.lang.lisp from the Google Groups system. "Of specific concern is the archive. These are some of the oldest groups on Usenet, and the depth & breadth of the historical material that has just disappeared from the internet, on two seminal programming languages, is huge and highly damaging. These are the history and collective memories of two communities that are being expunged, and it's not great, since there is no other comprehensive archive after Google's purchase of Dejanews around 20 years ago." Perhaps Google can be convinced to restore the content, but it also seems that some of this material could benefit from a more stable archive.

PyCoder’s Weekly: Issue #431

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.