#690 – JULY 15, 2025
Reflections on 2 Years of CPython’s JIT Compiler
Ken is one of the contributors to CPython’s JIT compiler. This retrospective talks about what is going well and what Ken thinks could be better with the JIT.
KEN JIN
What Is Python’s __init__.py For?
Learn to declare packages with Python’s __init__.py, set package variables, simplify imports, and understand what happens if this module is missing.
REAL PYTHON
Quiz: What Is Python’s __init__.py For?
REAL PYTHON
[Live Event] Debugging AI Applications with Sentry
Join the Sentry team for the latest Sentry Build workshop on Debugging with Sentry AI using Seer, MCP, and Agent Monitoring. In this hands-on session, you’ll learn how to debug AI-integrated applications and agents with full-stack visibility. Join live on July 23rd →
SENTRY sponsor
Disassembling Python Code Using the dis Module
Look behind the scenes to see what happens when you run your Python (CPython) code by using the tools in the dis module.
THEPYTHONCODINGSTACK.COM
PyData London 2025 Videos
YOUTUBE.COM
Python 3.14.0b4 Released
PYTHON.ORG
PEP 734: Multiple Interpreters in the Stdlib (Final)
PYTHON.ORG
PEP 792: Project Status Markers in the Simple Index (Accepted)
PYTHON.ORG
Articles & Tutorials
Run Coverage on Tests
Code coverage tools tell you just what parts of your programs got executed during test runs. They’re an important part of your test suite, without them you may miss errors in your tests themselves. This post has two quick examples of just why you should use a coverage tool.
HUGO VAN KEMENADE
Python Software Foundation Bylaws Change
To comply with a variety of data privacy laws in the EU, UK, and California, the PSF is updating section 3.8 of the bylaws which formerly allowed any voting member to request a list of all members’ names and email addresses.
PYTHON SOFTWARE FOUNDATION
Happy 20th Birthday Django!
July 13th was the 20th anniversary of the first public commit to the Django code repository. In celebration, Simon has reposted his talk from the 10th anniversary on the history of the project.
SIMON WILLISON
330× Faster: Four Different Ways to Speed Up Your Code
There are many approaches to speeding up Python code; applying multiple approaches can make your code even faster. This post talks about four different ways you can achieve speed-up.
ITAMAR TURNER-TRAURING
Thinking About Running for the PSF Board? Let’s Talk!
It is that time of year, the PSF board elections are starting. If you’re thinking about running or want to know more, consider attending the office hours session on August 12th.
PYTHON SOFTWARE FOUNDATION
How Global Variables Work in Python Bytecode
To better understand how Python handles globals, this article walks through dynamic name resolution, the global store, and how monkey patching works at the bytecode level.
FROMSCRATCHCODE.COM • Shared by Tyler Green
Building a JIT Compiler for CPython
Talk Python To Me interviews Brandt Bucher and they talk about the upcoming JIT compiler for Python and how it is different than JITs in other languages.
KENNEDY & BUCHER podcast
International Travel to DjangoCon US 2025
DjangoCon US is in Chicago on September 8-12. If you’re travelling there from outside the US, this article has details that may be helpful to you.
DJANGOCON US
Using DuckDB With Pandas, Parquet, and SQL
Learn about DuckDB’s in-process architecture and SQL capabilities which can enhance performance and simplify data handling.
KHUYEN TRAN • Shared by Ben Portz
Exploring Protocols in Python
Learn how Python’s protocols improve your use of type hints and static type checkers in this practical video course.
REAL PYTHON course
How to Use MongoDB in Python Flask
This article explores the benefits of MongoDB and how to use it in a Flask application.
FEDERICO TROTTA • Shared by AppSignal
Open Source Security Work Isn’t “Special”
Seth gave a keynote talk at the OpenSSF Community Day NA and spoke about how in many open source projects security is thought of in isolation and it can be overwhelming to maintainers. This post from Seth is a summary of the talk and proposes changes to how we approach the security problem in open source.
SETH LARSON
Projects & Code
tika-python: Binding for Apache Tika REST Services
GITHUB.COM/CHRISMATTMANN
pytest-xdist: pytest Plugin for Distributed Testing
GITHUB.COM/PYTEST-DEV
pydoll: Automate Chromium-Based Browsers
GITHUB.COM/AUTOSCRAPE-LABS
django-rq-cron: A Cron Runner Built Atop rq
GITHUB.COM/BUTTONDOWN
PCL: Combine Python and C in One File
GITHUB.COM/HEJHDISS • Shared by Muhammed Shafin P
Events
Weekly Real Python Office Hours Q&A (Virtual)
July 16, 2025
REALPYTHON.COM
PyData Bristol Meetup
July 17, 2025
MEETUP.COM
PyLadies Dublin
July 17, 2025
PYLADIES.COM
Chattanooga Python User Group
July 18 to July 19, 2025
MEETUP.COM
IndyPy X IndyAWS: Python-Powered Cloud
July 22 to July 23, 2025
MEETUP.COM
PyOhio 2025
July 26 to July 28, 2025
PYOHIO.ORG
Happy Pythoning!
This was PyCoder’s Weekly Issue #690.
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