Bookmarks (442)

Asyncio Handle Control-C (SIGINT) When the user presses CTRL-C on the keyboard, the OS raises an interrupt signal to your program. When writing concurrent code this can get complicated as the signal goes to the process. This article shows you how to handle capturing CTRL-C elegantly when using asyncio. JASON BROWNLEE

Using raise for Effective Exceptions In this video course, you’ll learn how to raise exceptions in Python, which will improve your ability to efficiently handle errors and exceptional situations in your code. This way, you’ll write more reliable, robust, and maintainable code. REAL PYTHON course

Securing Python and Open Source Ecosystems Join this fireside chat featuring Dustin Ingram, Fellow at the Python Software Foundation (PSF), as we discuss trust and security for PyPI and other repositories in light of recent attacks, and initiatives such as Trusted Publishing - Tune in this Thursday! → ACTIVESTATE sponsor

Ruff Gets a Big Speed-Up Ruff has changed from a generated parser to a hand-written recursive descent parser in the latest release. This has resulted in >2x speedup in its linting performance. This article covers what has changed and why they did it. DHRUV MANILAWALA

OpenStreetMaps, Overpass API and Python OpenStreetMaps (OSM) is an an open source mapping project that allows people to browse the world map and to plan routes. Not only does it have the expected web interface, but it also has an API known as Overpass. This article shows you two ways to use Python to query Overpass. JUDITH VOCKENROTH

Python Gotcha: strip Can Remove More Than Expected The Python strip, lstrip, and rstrip functions can have unexpected behavior: they strip a list of characters, not strings. Even though this is documented, it can lead to unexpected results. This post explains what happens and shows you two functions to use instead. ANDREW WEGNER

Decoupling Systems to Get Closer to the Data What are the benefits of using a decoupled data processing system? How do you write reusable queries for a variety of backend data platforms? This week on the show, Phillip Cloud, the lead maintainer of Ibis, will discuss this portable Python dataframe library. REAL PYTHON podcast

Announcing py2wasm: A Python to Wasm Compiler Wasmer, a company that builds Wasm tools, has announced py2wasm which converts your Python programs to WebAssembly, running at 3x faster speeds than direct Wasm. This post introduces you to the tool and shows how they took advantage of the Nuitka library. SYRUS AKBARY

How to Format Floats Within F-Strings in Python In this tutorial, you’ll learn how to use Python format specifiers within an f-string to allow you to neatly format a float to your required precision. You’ll also learn how to extract digits from existing strings and format them as well. REAL PYTHON

Memory Management in mpmetrics The mpmetrics library contains tools for determining runtime metrics on your code. To do this it requires some esoteric memory management techniques normally not undergone in Python. This post describe what they’ve done and why. TRENDS BLOG

The Time Complexities Python Data Structures in Python Big O notation describes the relationship between an algorithm, how much data it is using, and the time it takes to run. This article covers the time complexities of a variety of Python data structures. TREY HUNNER

Django Project on NGINX Unit Unit is a web server developed by the NGINX folks with pluggable support for Python using WSGI and ASGI. Aidas tried it out and this post talks about how he got some Django code working on this server. AIDAS BENDORAITIS

I Asked 100 Devs Why They Aren’t Shipping Faster? Daksh asked 100 developers why they aren’t shipping faster and this blog post shares what he learned. Problems include dependency bugs, overly complicated code bases, waiting on requirements, and more. DAKSH GUPTA

Shape Typing in Python This quick blog post shows you how to use Python type checking to ensure the dimensions of matrices being multiplied together. Typing is no longer just “is it an integer”. JAMES FISHER

Software Needs to Be More Expensive Open source is free, and although that is a good thing, it also means companies get to take without giving back. This opinion piece talks about how that should change. GLYPH LEFKOWITZ

Pydantic: Simplifying Data Validation in Python Discover the power of Pydantic, Python’s most popular data parsing, validation, and serialization library. In this hands-on tutorial, you’ll learn how to make your code more robust, trustworthy, and easier to debug with Pydantic. REAL PYTHON

Best Python Security Practices for Web Developers Coding on the web means you have to be more security conscious as everyone has access to your software. This article discusses key steps you can take to help make your code more secure. ARJAN

Python Error and Performance Monitoring That Doesn’t Suck With Sentry, you can trace issues from the frontend to the backend—detecting slow and broken code, to fix what’s broken faster. Installing the Python SDK is super easy and PyCoder’s Weekly subscribers get three full months of the team plan. Just use code “pycoder” on signup → SENTRY sponsor

The State of Python in 2024 Michael of TalkPython fame gave this keynote at PyCon Philippines. He addresses topics such as Python trends in code, asyncio, Flask and Django, getting rid of the GIL and more. MICHAEL KENNEDY video

Optimizing Django’s System Check Framework “Django’s system check framework provides fantastic protection for configuration mishaps. It’s like a targeted linter that runs when you start Django commands.” It also can be a bit slow for large projects. As part of the Django 5.1 release many optimizations have been applied. This blog posts discusses the work involved. ADAM JOHNSON

A Lazy and Flippant Classification of Programming Languages “When talking flippantly about programming languages, it’s sometimes useful to glob a bunch of them together based on characteristics, whether superficial or not. This started with jokes about common features of ‘P languages’ like Perl, PHP, Python, JavaScript and Ruby, but you can classify other languages too.” BRYCE KERLEY

Generating QR Codes With Python In this video course, you’ll learn how to use Python to generate QR codes, from your standard black-and-white QR codes to beautiful ones with your favorite colors. You’ll learn how to format QR codes, rotate them, and even replace the static background with moving images. REAL PYTHON course

So Your Teacher Wants You to Do Open Source Sometimes teachers or mentors ask students to contribute to an open source project, without the context of what that entails. This opinion piece covers just how much noise that causes for the projects and why you shouldn’t do it unless you truly mean to contribute. DAVID LORD

Adventures in Import-Land Ashlynn ran into a problem where her code was initializing a connection to the Google Cloud API before the credentials for it had been imported. This blog post covers the problem and how she got around it. ASHLYNN ANTROBUS

503 Days Working Full-Time on FOSS: Lessons Learned For a year and a half, Rodrigo worked at Textualize the company behind the popular open source Python projects Rich and Textual. This blog post talks about what he learned while he was there. RODRIGO GIRÃO SERRÃO

Python F-String Codes I Use Every Day Like many of us, Pawel uses f-strings a lot. Even with frequent use, it can be hard to remember how the formatting syntax works. This post covers some of the more common formats around. PAWEL JASTRZEBSKI

Clean Code in Python What’s it mean to write clean code? What is clean Python code, specifically? This article talks about how to write code that is easier to read and the tools you can use to get there. NIK TOMAZIC

Predicting Solar Eclipses With Python Were you in the path of the eclipse last week? Would you like to figure out if you’ll be in the next one? This article shows you how using the Astropy library. ERIK BERNHARDSSON

Video Subtitling With Whisper, FFmpeg, and Python This guide walks you through transcribing video using the OpenAI Whisper model and seamlessly adding subtitles with FFmpeg tool. EDITFRAME