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Python Programming

Submitted by Roy Schestowitz on Friday 10th of April 2020 09:33:13 PM Filed under
Development
  • WebRTC on mobile devices

    In one of my previous posts I described how to set up WebRTC in a simple web application, without unnecessary dependencies. Here I will expand that solution, making WebRTC work on a mobile device.

    For mobile development we will use React Native and react-native-webrtc module. The app was tested only on Android (versions 5.1 and 9), but after adding proper configuration it should work also on iOS.

  • sphinxcontrib-spelling 5.0.0

    sphinxcontrib-spelling is a spelling checker for Sphinx-based documentation. It uses PyEnchant to produce a report showing misspelled words.

  • The Real Python Podcast – Episode #4: Learning Python Through Errors

    This week Christopher interviews Martin Breuss, about a couple of the video training courses he’s created for Real Python. They discuss his course on getting started with Django, and how to learn Python through errors, and how errors really are your friends.

    Martin talks about his work with Coding Nomads, and teaching Python around the world. He also provides some tips on debugging and writing good questions. This episode was recorded at an earlier date, and because of recent events Martin came back to discuss a new #StayAtHome Mentorship Program he’s working on. The program is meant not only for learners but also for those who want to try their hand at being a mentor. We also answer our first listener submitted question.

  • Reading and Writing JSON Files in Python with Pandas

    Pandas is one of the most commonly used Python libraries for data handling and visualization. The Pandas library provides classes and functionalities that can be used to efficiently read, manipulate and visualize data, stored in a variety of file formats.

    In this article, we'll be reading and writing JSON files using Python and Pandas.

  • When to use metaclasses in Python: 5 interesting use cases

    Metaclasses are mentioned among the most advances features of Python. Knowing how to write one is perceived like having a Python black belt. But are they useful at all outside job interviews or conference talks? Let’s find out! This article will show you 5 practical applications of metaclasses.

  • Onboarding Forms - Building SaaS #51

    In this episode, we added the first form to collect data in the onboarding flow. We used a CreateView and defined all the fields that are needed in the HTML form.

    I started by filling in the HTML form structure of the page. Once the dummy version was in place, we changed from a TemplateView to a CreateView and began fixing each configuration error that the new view type reported as missing like missing a model field declaration.

    With the form in a working state, I created the next view in the sequence and wired the success state of the form to a redirect to the next step.

    At the end of the stream, I talked about the polish that is needed before the page is complete.

  • Reworking StringIO concatenation in Python

    Python string objects are immutable, so changing the value of a string requires that a new string object be created with the new value. That is fairly well-understood within the community, but there are some "anti-patterns" that arise; it is pretty common for new users to build up a longer string by repeatedly concatenating to the end of the "same" string. The performance penalty for doing that could be avoided by switching to a type that is geared toward incremental updates, but Python 3 has already optimized the penalty away for regular strings. A recent thread on the python-ideas mailing list explored this topic some.

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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

    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.

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