#682 – MAY 20, 2025
Going Beyond requirements.txt With pylock.toml
What is the best way to record the Python dependencies for the reproducibility of your projects? What advantages will lock files provide for those projects? This week on the show, we welcome back Python Core Developer Brett Cannon to discuss his journey to bring PEP 751 and the pylock.toml file format to the community.
REAL PYTHON podcast
I Don’t Like NumPy
This opinion piece talks about why NumPy gets difficult fast. Two dimensions to your array? No problem, the calc is mostly self evident. Add a couple more dimensions and it gets messy fast. See also the associated HN discussion, which also includes possible solutions.
DYNOMIGHT
Webinar: Inside Dust’s AI-Powered Vision for the Future of Work
Join us on June 5 for a behind-the-scenes look at how Dust is building the future of work with AI and why Temporal is at the heart of their platform. We’ll explore how Dust is transforming those everyday tasks with intelligent agents that are deeply contextual, resilient, and production-ready →
TEMPORAL sponsor
Unravelling t-strings
PEP 750 introduced t-strings for Python 3.14. These are a template string mechanism similar to f-strings. Although they are in 3.14.0b1, there isn’t any documentation yet, so this post explains what they are how they can be used.
BRETT CANNON
Quiz: Getting Started With Python IDLE
REAL PYTHON
Python Jobs
Senior Software Engineer – Quant Investment Platform (LA or Dallas) (Los Angeles, CA, USA)
Causeway Capital Management LLC
More Python Jobs >>>
Articles & Tutorials
Working With Missing Data in Polars
In this video course, 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 course
Django Security Best Practices
This guide contains a long list of best practices for securing your Django site. It includes topics such as ensuring HTTPS everywhere, hardening your database, using key built-in security features, and more.
AHMAD SADEDDIN
Read My Lips: Automate Lip Syncing with Wav2Lip
Don’t let your message be misunderstood! Use Wav2Lip for automated and AI-powered lip syncing. Get the code now.
INTEL CORPORATION sponsor
t-strings in Python (PEP 750)
Python 3.14 will include the new t-string concept, an f-string like mechanism for string templating. Talk Python interviews Paul Everitt, David Peck, and Jim Baker and they talk about the upcoming feature.
KENNEDY ET AL podcast
The Database Row That Did and Didn’t Exist
Misty ran into a confounding bug, where loading and saving certain Django ORM objects was failing, but not all of them. Read on to understand what went wrong.
MISTY DE MÉO
The Appearing Built-In
Rodrigo discovered that examining the builtins module in the REPL changes the size of the builtins module. Read on to find what causes this oddity.
RODRIGO GIRÃO SERRÃO
What Does @Slot() Do in Qt?
When working with Qt slots and signals in PySide6 you might discover the @Slot decorator. This post tells you what it does and why you might use it.
MARTIN FITZPATRICK
5 Steps to N-Body Simulation
This article shows you how to simulate gravity in an N-body problem. It starts out with simpler simulation then adds optimizations as it goes along.
ALVIN NG
PEPs & Co.
A little bit of Python history: where the term “PEP” came from, along with a list of similar types of documents for other languages.
HUGO VAN KEMENADE
The First Year of Free-Threaded Python
A recap of the first year of work on enabling support for the free-threaded build of CPython in community packages.
NATHAN GOLDBAUM
Pandas: Drop Columns by Name in DataFrames
A quick overview of the variety of ways to drop columns from a pandas DataFrame, referencing the columns by name.
ERIK MARSJA
Working on Complex Systems: What I Learned at Google
Explore the key characteristics of complex systems and learn practical patterns for tackling complex problems.
TEIVA HARSANYI
Building a Real-Time Dashboard With Flask and Svelte
Learn how to build a real-time analytics dashboard using Flask and Svelte with server-sent events.
AMIR TADRISI
Projects & Code
manim: Framework for Mathematical Animations
GITHUB.COM/MANIMCOMMUNITY
pytest-benchmark: pytest Fixture for Benchmarking Code
GITHUB.COM/IONELMC
param: Clearer Python by Declaring Parameters
GITHUB.COM/HOLOVIZ
pyftpdlib: Fast and Scalable Python FTP Server Library
GITHUB.COM/GIAMPAOLO
pyrefly: A Fast Type Checker and IDE for Python
GITHUB.COM/FACEBOOK
Events
Weekly Real Python Office Hours Q&A (Virtual)
May 21, 2025
REALPYTHON.COM
Python Leiden User Group
May 22, 2025
PYTHONLEIDEN.NL
PyLadies Amsterdam: Dapr in Action: From Core Concepts to AI Agents
May 27, 2025
MEETUP.COM
Python Sheffield
May 27, 2025
GOOGLE.COM
PyCon Italia 2025
May 28 to June 1, 2025
PYCON.IT
PyKla Monthly Meetup
May 28, 2025
MEETUP.COM
Happy Pythoning!
This was PyCoder’s Weekly Issue #682.
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