PyCoder’s Weekly

Issue #756: 3.15 Released For Real This Time, Muse, and More (2026-10-13)

2026-10-13T19:30:00+00:00

#756 – OCTOBER 13, 2026
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The 5 Most Exciting New Features of Python 3.15

This article explains the 5 best new features of Python 3.15 with clear examples and explanations.
RODRIGO GIRÃO SERRÃO

How Fast Is Python 3.15?

Miguel benchmarks Python 3.15 RC3 and compares it to the performance of past releases as well as PyPy and even other languages.
MIGUEL GRINBERG

CodeAF: 2x OpenCode’s and 4x Claude Code’s solves, same model

On DeepSWE, CodeAF solved 2× as many real GitHub issues as OpenCode and nearly 4× as many as Claude Code on the same open model, at up to 4.8× less per solved issue. A new open-source coding harness built for open models like DeepSeek, Qwen, GLM and Kimi, and it works with closed models too. Try CodeAF on GitHub
AGENTFIELD sponsor

What Is Meta Muse? A Plain-English Guide to Meta’s New AI

What is Meta Muse? Learn what Meta’s AI agent can do, what it costs, how it handles your data, and where Python fits in. No coding required.
REAL PYTHON

Codex for Python Developers: Hands-On Agentic Coding Course

In this 2-day live course, you’ll build a complete Python CLI app from an empty directory with Codex CLI, an AI agent that reads your files, runs your tests, and fixes errors in your terminal. Sessions run November 7–8 on Zoom.
REAL PYTHON

Articles & Tutorials

P Is for Python Enhancement Proposal (PEP)

PEPs are proposals for how Python the programming language is changed. Even if you’ll never interact with them, reading them and the discussion around them will make you a better communicator.
JUHA-MATTI SANTALA

Codemoo: Demonstrating How Coding Agents Work

How do you assemble the core pieces of a coding agent? How are developers defining projects through conversation and introspection? This week on the show, Geir Arne Hjelle returns to talk about his recent project to demonstrate how coding agents work under the hood.
REAL PYTHON podcast

The Things You Own End Up Owning You

A recap of Pratham’s Quansight internship porting NumPy extension modules to the Limited API: heap types, swapping macros for function calls, and the side quest it started, getting NumPy ready for subinterpreters.
PRATHAM HOLE

Why Most Data Science Notebooks Die After Day One

Six habits that keep a notebook runnable after you close your laptop, including establishing imports and setup in your first cell, keeping to one function per cell, and more.
NATE ROSIDI

Generate Images in Python With OpenAI’s GPT Image API

Learn how to generate images from text prompts with OpenAI’s GPT Image API in Python, tune their size and quality, and edit them with a follow-up prompt.
REAL PYTHON

Quiz: Generate Images in Python With OpenAI’s GPT Image API

REAL PYTHON

Hugging Face Transformers: Leverage Open-Source AI in Python

Get hands-on with Hugging Face Transformers in Python. Download, run, and inspect pretrained open-source AI models, and speed up inference on GPUs.
REAL PYTHON

Saving Jet Fuel

This article shows you how to use the scikit-decide library to determine an optimal flight path to save jet fuel for a Boeing 787-9 Dreamliner.
MARK LITWINTSCHIK

Towards Async Transactions in Django

async with transaction.atomic() is coming to Django, hopefully for 6.2. This post talks about how we got there at Django on the Med, and what the rules will be.
CARLTON GIBSON

How We Built an Async-Aware Python Profiler

Learn how Datadog made Python profiling async-aware while reducing profiler overhead and preserving context across asyncio tasks.
KOWALSKI & GERRING

First Steps Into Memory Management in Python

A quick introduction to how Python manages memory under the hood and how that might effect your code.
DANIELL BASTOS

Show and Hide Wagtail Admin Fields Without JavaScript

Learn how to show and hide Wagtail admin fields easily without writing any JavaScript.
TIM KAMANIN

Projects & Code

django-prose-editor: ProseMirror-based HTML Editor

GITHUB.COM/FEINCMS

polynx: pandas-Style Query/Eval Strings for Polars

GITHUB.COM/LOWELLWINSTON • Shared by Lowell Winston

nvmon: A Fancy NVIDIA GPU Monitor for the Terminal

GITHUB.COM/HAN-DONGHEUN • Shared by Han DongHeun

pyEQL: An Interface for Water Chemistry

GITHUB.COM/KINGSBURYLAB • Shared by Michael Mulqueen

django-upgrade-report: Which Dependencies Block an Upgrade to Your Django Project?

GITHUB.COM/DERBLUB

Events

Weekly Real Python Office Hours Q&A (Virtual)

October 14, 2026
REALPYTHON.COM

PyCon NL 2026

October 15 to October 16, 2026
PYCON-NL.ORG

PyData Bristol Meetup

October 15, 2026
MEETUP.COM

PyLadies Dublin

October 15, 2026
PYLADIES.COM

Chattanooga Python User Group

October 16 to October 17, 2026
MEETUP.COM

PyCon Taiwan

October 17 to October 19, 2026
PYCON.ORG

PyCon Panamá 2026

October 22 to October 24, 2026
PYCON.PA

PyHo 2026

October 23 to October 25, 2026
PYTHONHO.COM

PyBeach 2026

October 24 to October 25, 2026
PYBEACH.ORG

Happy Pythoning!
This was PyCoder’s Weekly Issue #756.
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Issue #755: 3.15 Gets an RC3, New Feature Rundown, Sampling Profiler, and More (2026-10-06)

2026-10-06T19:30:00+00:00

#755 – OCTOBER 6, 2026
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Python Adds a Release: 3.15.0rc3

Due to issues found in the new lazy loading features, an emergency Release Candidate has been adding, delaying Python 3.15 by a week.
PYTHON.ORG

Python 3.15: Cool New Features for You to Try

Learn what’s new in Python 3.15, from lazy imports, frozendict, and sentinels to a sampling profiler and friendlier error messages. Also available as a video course.
REAL PYTHON

Quiz: Python 3.15: Cool New Features for You to Try

REAL PYTHON

Connect Python AI Agents to Real-Time ClickHouse

Give your Python AI agents and memory systems low-latency access to analytical data. Tinybird turns high-volume event streams into sub-100ms REST APIs with native Python SDKs, CLI tooling, & MCP support. Skip building data pipelines and feed real-time context directly into your Python agent workflow Start Building Free with Python SDK
TINYBIRD sponsor

Tachyon, Python 3.15’s Built-in Sampling Profiler

Talk Python interviews László Kiss Kollár and Pablo Galindo Salgado, key contributors to the new sampling profiler code named “Tachyon” which has been added to Python 3.15.
TALK PYTHON podcast

Python 3.15 Preview: Sentinel Values

Learn how to create a Python sentinel value with the new built-in in Python 3.15 and get readable signatures, type hints, and safe copying and pickling.
REAL PYTHON

Quiz: Python 3.15 Preview: Sentinel Values

Test your grasp of Python 3.15’s new sentinel built-in, from readable signatures and type hints to safe copying, pickling, and when to use one.
REAL PYTHON

PEP 824: None-Coalescing Operators (Draft)

PYTHON.ORG

PEP 823: None-Aware Access Operators (Draft)

PYTHON.ORG

Python 3.10.22, 3.11.17, 3.12.15, 3.13.16 and 3.14.8 Released

PYTHON.ORG

The Python Documentation Is Now Available in Persian

PYTHON.ORG

Articles & Tutorials

Protocol or ABC? Designing a Pluggable Provider Interface

Designing a CLI tool that talks to two different image-generation backends. Same inputs from the user, two different SDKs underneath. How best to define the shared contract: an abstract base class, or a typing.Protocol? This article looks at both options.
BELDERBOS.DEV • Shared by Bob Belderbos

PyScript Is in Maintenance Mode

PyScript entered maintenance mode last month — the API is frozen, and only Pyodide updates continue. This piece walks through the honest landscape of Python-in-the-browser tools now that the default answer has stopped moving.
DEV.TO • Shared by Aswanth R

Stop Falling Behind on AI. Catch Up in Five Minutes

New models, new prices, new agent tools, all the time. Real Python’s new AI newsletter gives you the handful of stories you actually need as a developer. Tell us how often you want it (daily, weekly, or monthly) and save your spot. Get the Free Roundup →
REAL PYTHON sponsor

Working With AI Agents: Focused Live Courses for Python Developers

Five focused live courses for Python developers who use AI agents: predict what they’ll do, check what they wrote, direct them on a real project, run them as a team, and trust them unattended.
REAL PYTHON

Python Language Summit 2026

The 2026 Python Language Summit was hosted in Kraków, Poland as part of EuroPython 2026. There were 15 talks covering free-threading, Rust, garbage collection, type annotations, and more.
SETH LARSON

Tracing `np.add`, All the Way Down

NumPy’s add method does what you’d expect: it adds two objects together. Under the covers there is a lot going on. This deep dive shows you just what is happening behind the scenes.
VEIT HELLER

The Export Keyword (PEPs 842 and 843)

There have been multiple PEPs recently proposing different ways of managing what is and isn’t visible outside of a module. This post runs down the various proposals.
ANDRE ROBERGE

Undocumented Django: Generating a SECRET_KEY

Exploring the “hidden features” lurking in Django’s codebase that allow you to generate a secret key along with some advice on how to keep it secret.
LEARN DJANGO

Pipenv: A Guide to the Python Packaging Tool

Pipenv replaces pip, virtualenv, and requirements.txt with a single tool. See what it solves and how to manage dependencies with it.
REAL PYTHON

Object-Oriented Programming (OOP) in Python

Learn object-oriented programming in Python: the OOP paradigm, classes and inheritance, and how to instantiate objects from a class.
REAL PYTHON

Projects & Code

Ciaren: Visual ETL That Exports pandas and Polars

GITHUB.COM/CIAREN-LABS • Shared by Ciaren Labs (submitted by an assistant)

proxy-benchmark: Benchmarks for Proxies & Browsers

GITHUB.COM/NODEMAVEN • Shared by Alexandr

RightWayUp: Find Up in an Image From Python or CLI

GITHUB.COM/ORTUSAITECH • Shared by Vladimir Ilyash

Flowfile: Turn Polars Style Code Into an ETL Pipeline

GITHUB.COM/EDWARDVANEECHOUD • Shared by Edward van Eechoud

FlexViz: Interactive Exploration of 1 Billion Data Points

GITHUB.COM/FLEX-ANALYTICS • Shared by Jeroen Van Der Donckt

Events

PyCon Africa 2026

October 7 to October 12, 2026
PYCON.ORG

Weekly Real Python Office Hours Q&A (Virtual)

October 7, 2026
REALPYTHON.COM

PyEducation: IPAF

October 8 to October 9, 2026
PYCON.ORG

Python Atlanta

October 8 to October 9, 2026
MEETUP.COM

DFW Pythoneers 2nd Saturday Teaching Meeting

October 10, 2026
MEETUP.COM

PyCon Greece 2026

October 12 to October 14, 2026
PYCON.GR

PyCon NL 2026

October 15 to October 16, 2026
PYCON-NL.ORG

PyCon Taiwan

October 17 to October 19, 2026
PYCON.ORG

Happy Pythoning!
This was PyCoder’s Weekly Issue #755.
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[ Subscribe to 🐍 PyCoder’s Weekly 💌 – Get the best Python news, articles, and tutorials delivered to your inbox once a week >> Click here to learn more ]

Issue #754: Jev, PyO3, Temp Files, and More (2026-09-29)

2026-09-29T19:30:00+00:00

#754 – SEPTEMBER 29, 2026
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How to Get Started With Jev in Python

Connect a Python script to the Jev model with the TypeSafe SDK and OpenRouter, then replace brittle input checks with Noul, Score, and Choice answers.
REAL PYTHON

Quiz: How to Get Started With Jev in Python

REAL PYTHON

MCP Auth That Passes the Security Review

When your customers connect AI agents to your product, their security team will have questions. PropelAuth has the answers built in: role-gated scopes, enterprise SSO through Okta and Entra ID, phishing-resistant consent screens, and an audit log of every agent connection. Learn More →
PROPELAUTH sponsor

How Libraries Run Rust Inside Python (With PyO3)

How do libraries run Rust inside Python? It all comes down to 4 steps: 1. Write Rust code, 2. Annotate it with PyO3 macros, 3. Let maturin compile and install it, 4. Import the result. See this in action for a hand-rolled JSON parser in this article.
BELDERBOS.DEV • Shared by Bob Belderbos

Creating Temporary Files in Python

How to create temporary files and directories in Python using the tempfile module’s NamedTemporaryFile and TemporaryDirectory.
TREY HUNNER

PEP 849: More Expressive Type Expressions (Draft)

PYTHON.ORG

PEP 848: Generational Incremental Garbage Collection (Draft)

PYTHON.ORG

PyPy v8.0.0 Released

PYPY.ORG

Articles & Tutorials

Navigating AI in Open Source: Insights From Wagtail

How should you manage AI contributions to an open-source project? How do you measure the impact of using AI tools for development, and what generative features do end users want from a content management system? This week on the show, we speak with Thibaud Colas and Meagen Voss from Wagtail about the complex considerations software organizations are currently facing.
REAL PYTHON podcast

How BMLL Processes 1.5 TB of Data in Under 4 Minutes

BMLL Technologies processes petabytes of nanosecond-precision market data for the world’s most sophisticated trading teams. In this case study, they share what a 48x performance improvement from Polars over pandas looks like in practice, and what it means for execution analysis at scale.
POLA.RS

Agent Memory for Wherever Your AI Is Running

Ship VectorAI DB to your edge device, factory floor, air-gapped facility, or enterprise data center and get a portable multimodal vector database that moves with your stack. Start on a laptop, validate retrieval quality against your workload, and promote the same pattern to production. Get Started Free →
ACTIAN sponsor

Python Statistics Fundamentals: How to Describe Your Data

In this step-by-step tutorial, you’ll learn the fundamentals of descriptive statistics and how to calculate them in Python. You’ll find out how to describe, summarize, and represent your data visually using NumPy, SciPy, pandas, Matplotlib, and the built-in Python statistics library.
REAL PYTHON

EVE Online Departs for Python 3

The game EVE has run on Python 2 since it launched in 2003, all 2.4 million lines of it, on a custom Stackless interpreter that stopped at 3.8. That is in the process of changing. Talk Python interviews three EVE developers about this process.
TALK PYTHON podcast

I Is for Immutable: Python a to Z

The first thing most people learn in programming is that you can save data in variables and change their values. For Juha-Matti, learning about immutable data structures and functional programming was a painful but important shift in schema.
JUHA-MATTI SANTALA

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