What if you could build charts in Python by describing what your data means, instead of scripting every visual detail? Christopher Trudeau is back on the show this week with another batch of PyCoder’s Weekly articles and projects. We cover a recent Real Python article about the data visualization library Altair. Most tools require you to write detailed boilerplate code to set up the axis and figure. Altair follows a declarative approach where you specify which columns go to which axis, the type of chart or plot, and what should be interactive. We also share other articles and projects from the Python community, including recent releases, clarifying the differences between iterators and iterables, decoupling your business logic from the Django ORM, comparing an LLM-based tool for web scraping against Playwright, a neural network emulator for guitar amplifiers, and a CLI tool to generate ASCII art of the current moon phase. This episode is sponsored by Build Your Own Coding Agent. Video Course Spotlight: Use Codex CLI to Enhance Your Python Projects Learn how to use Codex CLI to add features to Python projects directly from your terminal, without needing a browser or IDE plugins. Topics: 00:00:00 – Introduction 00:02:38 – Read the Docs Now Supports uv Natively 00:03:09 – Reverting the Incremental GC in Python 3.14 and 3.15 00:04:51 – Altair: Declarative Charts With Python 00:12:23 – Sponsor: Build Your Own Coding Agent 00:13:17 – Decoupling Your Business Logic From the Django ORM 00:19:51 – browser-use vs. Playwright: Which to Pick for Web Scraping? 00:26:58 – 2048: iterators and iterables - Ned Batchelder 00:31:31 – Video Course Spotlight 00:33:00 – Discussion: Jumping back into solo developer mode 00:46:59 – neural-amp-modeler: Neural network emulator for guitar amplifiers 00:51:48 – ascii-moon-phase-python: CLI for ASCII art of the current moon phase 00:53:11 – Thanks and goodbye 00:54:43 – Appendix: Neural Amp Modeler - Demo News: Read the Docs Now Supports uv Natively – Popular open source documentation site Read the Docs has announced they now support native uv in .readthedocs.yaml for Python dependency installation. Learn how to use it in your configurations Reverting the Incremental GC in Python 3.14 and 3.15 Fixing a Memory “Leak” From Python 3.14’s Incremental Garbage Collection – Adam encountered an out-of-memory error while migrating a client project to Python 3.14. The issue occurred when running Django’s database migration command on a limited-resource server, and seemed to be caused by the new incremental garbage collection algorithm in Python 3.14. Show Links: Altair: Declarative Charts With Python – Build interactive Python charts the declarative way with Altair. Map data to visual properties and add linked selections. No JavaScript required. Decoupling Your Business Logic From the Django ORM – Where should I keep my business logic? This is a perennial topic in Django. This article proposes a