#741 – JUNE 30, 2026 VIEW IN BROWSER

The PyCoder’s Weekly Logo

Please Don’t Hijack My Python Root Logger
Some Python libraries configure the root logger at import time, which can silently override application logging choices. This article walks through the logger hierarchy, shows why libraries should use named loggers with NullHandler, and gives practical patterns that keep logging behavior under the application’s control.
REDOWAN DELOWAR • Shared by Redowan Delowar

Why I Wrote PEP 832: Virtual Environment Discovery
PEP 832 proposes a way to describe where your virtual environment is so that your tools can look in the right place. Although a relatively simple proposal it has caused some contention in the community. This post by Brett, the PEP’s author, describes his reasoning.
BRETT CANNON

An Open-Source Code Reviewer That Runs on Any LLM
Your agents open PRs faster than you can review them. pr-af is a multi-agent reviewer that drops into GitHub Actions and runs on the model you already use — open-source, self-hosted, or closed. Every finding ships with evidence. Star it on GitHub →
AGENTFIELD sponsor

Django Tasks: Exploring the Built-in Tasks Framework
Explore Django Tasks, the new built-in framework in Django 6.0, and run background jobs with @task, named queues, and a lightweight alternative to Celery.
REAL PYTHON

Quiz: Django Tasks: Exploring the Built-in Tasks Framework
REAL PYTHON

Python 3.15.0 Beta 3 Released
PYTHON.ORG

Django 6.1 Beta 1 Released
DJANGO SOFTWARE FOUNDATION

Articles & Tutorials

Astral Joins OpenAI
OpenAI recently acquired Astral, the company behind uv, Ruff, and ty. And if your first thought was ‘wait, is uv toast?’, you are not alone. Talk Python interviews Charlie Marsh and they talk about the acquisition experience and how they’re shipping more code than ever.
TALK PYTHON podcast

The Fastest Python Struct?
An adventure in Python struct benchmarking: slotted class, NamedTuple, dataclass, attrs, msgspec, record-type, and a new C extension based on record-type and msgspec. Focus is on import-time, type-construction, memory, and instantiation cost.
JP HUTCHINS

Codex for Python Developers: A Hands-on Live Course
Build a complete Python project from an empty directory with OpenAI’s Codex in this two-day live course (July 11-12). You’ll scaffold, build, debug, and ship a real CLI app using an agent that works inside your codebase. See the Full Curriculum →
REAL PYTHON sponsor

Write a Coding Agent From First Principles
Learn how to write a coding agent in this Python tutorial that teaches how to interact with an LLM through an API, how to manage the conversation context, and how to do tool calling.
RODRIGO GIRÃO SERRÃO • Shared by Rodrigo Girão Serrão

Free Threading Internals: PyMutex
This is part 3 in an series about Free Threading internals (removal of the GIL) and talks about PyMutex, a one byte lock with fast inlineable lock and unlock functions.
VICTOR STINNER

uv in Production: The Speed Is Real, the Integration Isn’t Free
Oleg’s work moved their tooling from pip to uv and lived with it for ~90 days. They discovered that the speed is real, but that doesn’t mean there aren’t complications.
OLEG TSVETKOV • Shared by Oleg

Using LlamaIndex for RAG in Python
Learn how to set up LlamaIndex, load your data, build and persist an index, and run queries to get grounded answers with RAG in Python.
REAL PYTHON course

Quiz: Using LlamaIndex for RAG in Python
REAL PYTHON

Python for Data Analysis: A Practical Guide
In this tutorial, you’ll learn data analysis with Python by following a structured workflow with pandas, Matplotlib, and scikit-learn.
REAL PYTHON

When to Use classmethod, staticmethod, or Instance Methods
A simple decision rule for when to use a @classmethod, a @staticmethod, or a plain instance method in Python.
BOB BELDERBOS

7 More Common Mistakes in Architecture Diagrams
A rundown of seven more common mistakes in system architecture diagrams and how to fix them
BILLY PILGER

Projects & Code

Brought to you by Real Python sponsor
Online Python Training Created by Experts →

pyappdist: Turn a Python App Into a Native Installer
GITHUB.COM/ATSUOISHIMOTO • Shared by Atsuo Ishimtoo

flawed: Framework-Aware Static Analysis for Python Web Apps
GITHUB.COM/EXECVEAT • Shared by Andrew Konstantinov

pytest-mrt: Catch Database Migration Rollback Failures
GITHUB.COM/CROC100 • Shared by JUNEBEOM BAEK (croc)

linkedin2md: Export LinkedIn Data to Structured Markdown
GITHUB.COM/JUANMANUELDAZA • Shared by Juan Manuel Daza

Ozark: Examine Python ASTs, & Bytecode in Your Browser
FROMSCRATCHCODE.COM • Shared by Tyler Green