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  • How Python 3.9 fixed decorators and improved dictionaries

    This is the tenth in a series of articles about features that first appeared in a version of Python 3.x. Some of these versions have been out for a while. Python 3.9 was first released in 2020 with cool new features that are still underused. Here are three of them.

    Adding dictionaries

    Say you have a dictionary with "defaults," and you want to update it with parameters. Before Python 3.9, the best option was to copy the defaults dictionary and then use the .update() method.

  • Best Python Frameworks To Create Mobile Apps and Games

    This article will cover a list of useful Python frameworks that can be used to develop apps and games for mobile devices. Some of these frameworks also support desktop apps or work as standalone build tools for compiling builds for both desktop and mobile devices. You can use the same code base with minor modifications to deploy apps and games to both desktop and mobile devices.

  • Introduction to machine learning with Jupyter notebooks | Red Hat Developer

    Recently, I was working on an edge computing demo that uses machine learning (ML) to detect anomalies at a manufacturing site. This demo is part of the AI/ML Industrial Edge Solution Blueprint announced last year. As stated in the documentation on GitHub, the blueprint enables declarative specifications that can be organized in layers and that define all the components used within an edge reference architecture, such as hardware, software, management tools, and tooling.

    At the beginning of the project, I had only a general understanding of machine learning and lacked the practitioner's knowledge to do something useful with it. Similarly, I’d heard of Jupyter notebooks but didn’t really know what they were or how to use one.

    This article is geared toward developers who want to understand machine learning and how to carry it out with a Jupyter notebook. You'll learn about Jupyter notebooks by building a machine learning model to detect anomalies in the vibration data for pumps used in a factory. An example notebook will be used to explain the notebook concepts and workflow. There are plenty of great resources available if you want to learn how to build ML models.

  • Pyodide: Python for the browser [LWN.net]

    Python in the browser has long been an item on the wish list of many in the Python community. At this point, though, JavaScript has well-cemented its role as the language embedded into the web and its browsers. The Pyodide project provides a way to run Python in the browser by compiling the existing CPython interpreter to WebAssembly and running that binary within the browser's JavaScript environment. Pyodide came about as part of Mozilla's Iodide project, which has fallen by the wayside, but Pyodide is now being spun out as a community-driven project.

  • How to Implement a WebSocket in Python – Linux Hint

    WebSocket is an application layer protocol that allows two-way communication between a client and a server. WebSocket protocol works first by creating a handshake and then a message framing implemented over TCP rather than basic HTTP.

    WebSockets and other similar technologies such as SSE (Server-Sent Events) and WebRTC are helpful in applications where the server needs to keep an open connection to the connected clients. An excellent example of WebSockets used in applications is a chat application, online multiplayer games, and real-time tools such as analytics and collaboration tools.

    WebSockets provides us with a full-duplex, bidirectional connection between the server and the connected clients over the Web. That means both the server and the client can push data once there is an established connection.

    In this tutorial, I will not dive deep into how WebSockets work. Instead, I will show you how you can use Python to implement a simple application using WebSocket.

    If you wish to learn more about HTTP, WebSocket, and SSEs, check out the other tutorials on this site explaining their differences.

    NOTE: Before we begin, we assume you are familiar with basic networking concepts such as HTTP and HTTP requests. To implement the concepts in this tutorial with a degree of ease, you need to have basic Python and JavaScript Programming knowledge.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

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.