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Python Programming

Submitted by Roy Schestowitz on Wednesday 15th of April 2020 03:24:44 AM Filed under
Development
  • py3status v3.28 – goodbye py2.6-3.4

    The newest version of py3status starts to enforce the deprecation of Python 2.6 to 3.4 (included) initiated by Thiago Kenji Okada more than a year ago and orchestrated by Hugo van Kemenade via #1904 and #1896.

    Thanks to Hugo, I discovered a nice tool by @asottile to update your Python code base to recent syntax sugars called pyupgrade!

    Debian buster users might be interested in the installation war story that @TRS-80 kindly described and the final (and documented) solution found.

  • Implementing QPainter flood fill in PyQt5/PySide

    Building Piecasso (a PyQt5 Paint clone) I was disappointed to discover that while QPainter comes with a huge number of paint methods, ranging from pixels and lines to fully-filled polygons, it doesn't include a method for flood filling regions of an image.

    That makes a lot of sense, firstly because flood-filling is slow to do — requiring a pixel-by-pixel search through an image — and it's not that useful when drawing a UI, since you usually (and probably should) know what you're drawing and where.

    Still, I was disappointed there wasn't one, because I needed one for my app. What's Paint without being able to fill raggedy shapes in horrible colours?

  • Notes on last week’s Higher Performance Python class
  • Inheritance and Composition: A Python OOP Guide

    In this course, you’ll explore inheritance and composition in Python. Inheritance and composition are two important concepts in object oriented programming that model the relationship between two classes. They are the building blocks of object oriented design, and they help programmers to write reusable code.

  • PyCoder’s Weekly: Issue #416 (April 14, 2020)
  • Spring updates while trying to stay healthy

    As mentioned before, we will finally start to distribute Evennia via PyPi (the Python Package Index) - that is, you will be able to run `pip install evennia`. Using GIT will no longer be a requirement to get started.

    Considering how quickly people in open-source throw up their three lines of code on PyPi these days, it may be surprising Evennia is not already on PyPi. I have however felt that reading and referencing the highly-commented code is a big part and requirement for getting the most out of the library.

    With the new documentation system, this would improve. And you can of course still use git and follow master branch like the good ol' days if you want!

»

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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

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  • How To Install MongoDB on AlmaLinux 9 - idroot

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    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.

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