~pycoders | Issue #667: String Templates, Missing Data, Dynamic Forms, and More (Feb. 4, ... (24)

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

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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

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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

Technical Session on Fine-Grained Authorization in Python Learn how to write dynamic policies that enable your app to support features like scoped permissions and hierarchical resources with Oso – plus a live demo on refactoring an app from hardcoded permissions to debuggable authorization. OSO sponsor