Bookmarks (441)

How to Split a String in Python This tutorial will help you master Python string splitting. You’ll learn to use .split(), .splitlines(), and re.split() to effectively handle whitespace, custom delimiters, and multiline text, which will level up your data parsing skills. REAL PYTHON

The Mutable Trap: Avoiding Unintended Side Effects in Python “Ever had a Python function behave strangely, remembering values between calls when it shouldn’t? You’re not alone! This is one of Python’s sneakiest pitfalls—mutable default parameters.” CRAIG RICHARDS • Shared by Bob

Posit Package Manager: Secure Python Library Management Python developers use Posit Package Manager to mirror public & internally developed repos within their firewalls. Get reporting on known vulnerabilities to proactively address potential threats. High-security environments can even run air-gapped. POSIT sponsor

Decorator JITs: Python as a DSL There are several Just In Time compilation tools out there that allow you to decorate a function to indicate you want it compiled. This article shows you how that works. ELI BENDERSKY

Better Unit-Tests for Email With Django 5.2 Django 5.2 contains a new helper on the email class to make it easier to write unit-tests validating that your email contains the content you expect it to contain. MEDIUM.COM/AMBIENT-INNOVATION • Shared by Ronny Vedrilla

Rendering Form Fields as Group in Django Django 5.0 added the concept of field groups which make it easier to customize the layout of Django forms. This article covers what groups are and how to use them. VALENTINO GAGLIARDI

Developer Philosophy The author was recently invited with other senior devs to give a lightning talk on their personal development philosophy. This post captures those thoughts. QNTM

Interrupting Scripts Without Tracebacks This Things-I’ve-Learned post talks about how you can suppress the KeyboardInterrupt expression so your program doesn’t exit with a traceback. RODRIGO GIRÃO SERRÃO

PEP 772: Packaging Governance Process This PEP proposes a Python Packaging Council with broad authority over packaging standards, tools, and implementations. PYTHON.ORG

Python Terminology: An Unofficial Glossary “Definitions for colloquial Python terminology (effectively an unofficial version of the Python glossary).” TREY HUNNER

NumPy Techniques and Practical Examples In this video course, you’ll learn how to use NumPy by exploring several interesting examples. You’ll read data from a file into an array and analyze structured arrays to perform a reconciliation. You’ll also learn how to quickly chart an analysis & turn a custom function into a vectorized function. REAL PYTHON course

Let’s Compile Python 1.0 As part of the celebration of 31 years of Python, Bite Code compiles the original Python 1.0 and plays around with it. BITE CODE!

Save Memory With BytesIO If you want to save memory when reading from a BytesIO object, getvalue() is surprisingly a good choice. ITAMAR TURNER-TRAURING

A Revamped Python String-Formatting Proposal PEP 750 proposes template strings, and the PEP has been through a lot of modifications since it was originally introduced. This article covers the latest and why the changes have been made to the proposal. JAKE EDGE

How to Deal With Missing Data in Polars In this tutorial, you’ll learn how to deal with missing data in Polars to ensure it doesn’t interfere with your data analysis. You’ll discover how to check for missing values, update them, and remove them. REAL PYTHON

Build AI Agents in Just Hours not Months Design and deploy multi-agent systems at zero cost using our free plan, no credit card required. Skip complex configurations with pre-integrated setups for top LLMs. Speed up development with pre-built agent templates, and unlock advanced workflow functionality using our open-source Python package → DYNAMIQ sponsor

Dynamic Forms With Flask This post shows you how to create dynamic web forms, where fields are added on the fly, when coding within the Flask web framework. MIGUEL GRINBERG

Python Rgonomics: 2025 Update “Switching languages is about switching mindsets - not just syntax. New developments in Python data science toolings, like polars and seaborn’s object interface, can capture the ‘feel’ that converts from R/tidyverse love while opening the door to truly pythonic workflows. (Updated from 2025 for new tools).” EMILY RIEDERER

Portable Python Bundles on Windows Packaging and distributing a Python environment on MS Windows can be tricky. What if neither venvs nor tools like PyInstaller meet your needs? Here’s one take on it: Portable Python Bundles on Windows. Bundles are like venvs - but are self-contained, path independent and “just work” on any Windows machine. DEV.TO • Shared by Chris Korneck

Learn How to Build GenAI Projects Join a FREE 6-week virtual bootcamp and get hands-on experience building GenAI projects. It’s open to all skill levels with live, instructor-led classes guiding you every step of the way. Spots are filling fast—register today! INTEL CORPORATION sponsor

3D Printing Giant Things With a Python Jigsaw Generator This is a long, detailed article on 3D printing objects too large for the printer bed. The author has created dovetail joints to assemble pieces together. He wrote a Python program to automatically split up the larger model files into the jigsaw pieces needed to build a final result. CAL BRYANT

Creating a Scalable Flask Web Application From Scratch In this video course, you’ll explore the process of creating a boilerplate for a Flask web project. It’s a great starting point for any scalable Flask web app that you wish to develop in the future, from basic web pages to complex web applications. REAL PYTHON course

My First Steps With Playwright Playwright is a browser based automation tool that can be used for web scraping or testing. This intro article shows you how to use the Python interface to access a page including using cookies. NICOLAS FRÄNKEL

Looking at Django Task Runners and Queues There are a lot of different ways of running asynchronous tasks in Django. This article talks about two mechanisms used by the author, as well as the extra challenge of one-off jobs. KEVIN RENSKERS

PyPI Now Supports Project Archival The ability to mark a project as archived has been added to the Python Package Index. This article covers what archival can be used for as well as hinting at future improvements. FACUNDO TUESCA

Re-Creating Async in 10 Lines Using Generators This article outlines a simple re-implementation of the concepts available in the async library so you can better learn how it works under the covers. LUCAS SEIKI OSHIRO

Building Cython (Or C) Extensions Using uv Developing Python libraries with C extensions can be tricky. Learn how uv and setuptools can work together to build Cython-powered projects. SIDDHANT GOEL

Monkeypatching Django The nanodjango project is a modification to the Django framework that lets you get started with a single file instead of the usual cookie cutter directory structure. This is a detailed post explaining how nanodjango monkeypatches Django to achieve this result. RICHARD TERRY