Bookmarks (467)

Dictionary Comprehensions: How and When to Use Them In this tutorial, you’ll learn how to write dictionary comprehensions in Python. You’ll also explore the most common use cases for dictionary comprehensions and learn about some bad practices that you should avoid when using them in your code. REAL PYTHON

What We Learned From Analyzing 20.2 Million CI Jobs The Trunk Flaky Test public beta is open! You can now detect, quarantine, and eliminate flaky tests from your codebase. Discover insights from our analysis of 20.2 million CI jobs and see how Trunk can unblock pipelines and stop reruns. Access is free. Check out our getting started guide here → TRUNK sponsor

Python Puzzles A collection of Python puzzles. You are given a test file, and should write an implementation that passes the tests. All done in your browser. GPTENGINEER.RUN

Andrej Karpathy on Learning Entertainment-based content may appear educational, but it is not effective for learning. To truly learn, one should seek out long-form, challenging content that requires effort and engagement. Educators should prioritize creating meaningful, in-depth content that fosters deep learning. X.COM

Maintaining the Foundations of Python & Cautionary Tales How do you build a sustainable open-source project and community? What lessons can be learned from Python’s history and the current mess that the WordPress community is going through? This week on the show, we speak with Paul Everitt from JetBrains about navigating open-source funding and the start of the Python Software Foundation. REAL PYTHON podcast

The Practical Guide to Scaling Django Most Django scaling guides focus on theoretical maximums. But real scaling isn’t about handling hypothetical millions of users - it’s about systematically eliminating bottlenecks as you grow. Here’s how to do it right, based on patterns that work in production. ANDREW

The Polars vs pandas Difference Nobody Is Talking About When people compare pandas and Polars, they usually bring up topics such as lazy execution, Rust, null values, multithreading, and quey optimisation. Yet there’s one innovation which people often overlook: non-elementary group-by aggregations. MARCO GORELLI • Shared by Marco Gorelli

PyPI Introduces Digital Attestations to Strengthen Security PyPI now supports digital attestations. This feature lets Python package maintainers verify the authenticity and integrity of their uploads with cryptographically verifiable attestations, adding an extra layer of security and trust. SARAH GOODING • Shared by Sarah Gooding

Django’s Technical Governance Challenges, and Opportunities On October 29th, two DSF steering council members resigned, triggering an election earlier than planned. This note explains what that means and how you can get involved. DJANGO SOFTWARE FOUNDATION

We’ve Moved to Hetzner This post from Michael Kennedy talks about moving Talk Python’s hosting environment from Digital Ocean to Hetzner. It details everything involved in a move like this. TALK PYTHON

Formatting Floats Inside Python F-Strings In this video course, 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. REAL PYTHON course

Package Compatibility With Free-Threading and Subinterpreters This tracker tests the compatibility of the 500 most popular packages with Python 3.13’s free-threading and subinterpreter features. PYTHON.TIPS • Shared by Vita Midori

How to Debug Your Textual Application TUI applications require a full terminal which most IDEs don’t implement. To make matters more complicated, TUIs use the same calls that many command line debuggers use, making it hard to deal with breakpoints. This article teaches you how to debug a Textual TUI program. MIKE DRISCOLL

State of Python 3.13 Performance: Free-Threading This article does a comparison between code in single threaded, threaded, and multi-process versions under Python 3.12, 3.13, and 3.13 free-threaded with the GIL on and off. ARTHUR PASTEL

Scrape Any Website Without Getting Blocked The only web scraper API that extracts data at scale with a 98.7% average success rate while automatically handling all anti-bot systems. ZenRows is a complete web scraping toolkit with premium proxies, anti-CAPTCHA, headless browsers, and more. Try for free now → ZENROWS sponsor

Opposite of Cloud Native Is…? Michael (from Talk Python fame) introduces the concept of “stack-native” as the opposite of “cloud-native”, and how it applies to Python web apps. Building applications with just enough full-stack building blocks to run reliably with minimal complexity, rather than relying on a multitude of cloud services. MICHAEL KENNEDY

How to Reset a pandas DataFrame Index In this tutorial, you’ll learn how to reset a pandas DataFrame index using various techniques. You’ll also learn why you might want to do this and understand the problems you can avoid by optimizing the index structure. REAL PYTHON

Do Your Data Science Teams Struggle to Share Their Work With Their Colleagues Securely Posit Connect lets data teams publish, host, & manage Python work. It provides a secure, scalable platform for sharing data insights with those who need them, including models, Jupyter notebooks, Streamlit & Shiny apps, Plotly dashboards, and more. POSIT sponsor

Python Closures: Common Use Cases and Examples In this tutorial, you’ll learn about Python closures. A closure is a function-like object with an extended scope. You can use closures to create decorators, factory functions, stateful functions, and more. REAL PYTHON

In Defense of Simple Architectures You can go surprisingly far with a simple software architecture, in fact simplicity can make it easier to scale. This post talks about some real world cases of just that. DAN LUU

Vehicle Routing Using OpenStreetMap This project shows you how to implement the Vehicle Routing Problem (VRP) using OpenStreetMap data and Google’s OR-Tools library to find efficient routes. MEDIUM.COM/P • Shared by Albert Ferré

Guide to Python Project Management and Packaging This is a deep dive article on Python project management and packaging. It covers the pyproject.toml file, modules, dependencies, locking, and more. REINFORCED KNOWLEDGE

I Waited 10B Cycles and All I Got Was This Loading Screen This opinion piece discusses the fact that our faster hardware still can’t keep up with our bloated software and why that is the case. PRANAV NUTALAPTI

Thoughts on Django’s Core This post by a Django core developer talks about the last twenty years of the library and why it has had such staying power. CARLTON GIBSON

map and filter With List Comprehensions This quick-hit post shows you how to use the map() and filter() functions in conjunction with list comprehensions. JUHA-MATTI SANTALA

Don’t Return Named Tuples in New APIs This post talks about when and when not to use a named tuple in your API and why you might make that choice. BRETT CANNON

Introduction to Web Scraping With Python In this video course, you’ll learn all about web scraping in Python. You’ll see how to parse data from websites and interact with HTML forms using tools such as Beautiful Soup and MechanicalSoup. REAL PYTHON course