#687 – JUNE 24, 2025
Scaling Web Applications With Kubernetes and Karpenter
What goes into scaling a Python web application today? What are resources for learning and practicing DevOps skills? This week on the show, Calvin Hendryx-Parker is back to discuss the tools and infrastructure for autoscaling web applications with Kubernetes and Karpenter.
REAL PYTHON podcast
The Fastest Way to Detect a Vowel in a String
If you need to find the vowels in a string there are several different approaches you could take. This article covers 11 different ways and how each performs.
AUSTIN Z. HENLEY
Prevent Postgres Slowdowns on Python Apps with this Check List
Avoid performance regressions in your Python app by staying on top of Postgres maintenance. This monthly check list outlines what to monitor, how to catch slow queries early, and ways to ensure indexes, autovacuum, and I/O are performing as expected →
PGANALYZE sponsor
O(no) You Didn’t
A deep dive into why real-world performance often defies Big-O expectations and why context and profiling matter more than theoretical complexity
MRSHINY608
PyOhio 2025 (July 26-27) Registration Open
PYOHIO.ORG
Python 3.14.0 Beta 3
CPYTHON DEV BLOG
ruff Release 0.12.0
GITHUB.COM/ASTRAL-SH
streamlit Release 1.46.0
GITHUB.COM/STREAMLIT
Discussions
Ideas: Add Virtual Threads to Python
PYTHON.ORG
Python Jobs
Sr. Software Developer (Python, Healthcare) (USA)
Prenosis
More Python Jobs >>>
Articles & Tutorials
The PSF’s 2024 Annual Impact Report Is Here!
The Python Software Foundation releases a report every year on the state of the PSF and our community. This year’s report gives a run down of the successes of the language, key highlights of PyCon US, updates from the developers in residence, and more.
PYTHON SOFTWARE FOUNDATION
Are Python Dictionaries Ordered Data Structures?
Although dictionaries have maintained insertion order since Python 3.6, they aren’t strictly speaking ordered data structures. Read on to find out why and how the edge cases can be important depending on your use case.
STEPHEN GRUPPETTA
10 Polars Tools and Techniques to Level Up Your Data Science
Are you using Polars for your data science work? There are many libraries out there that might help you write less code. Talk Python interviews Christopher Trudeau and they talk about the Polars ecosystem.
KENNEDY & TRUDEAU podcast
Cut Django DB Latency With Native Connection Pooling
“Deploy Django 5.1’s native connection pooling in 10 minutes to cut database latency by 50-70ms, reduce connection overhead by 60-80%, and improve response times by 10-30% with zero external dependencies.”
SAURABH KUMAR
Will AI Replace Junior Developers?
At PyCon US this year, Adarsh chatted with various Python folks about one big question: will AI replace junior developers? He spoke with Guido van Rossum, Anthony Shaw, Simon Willison, and others.
ADARSH DIVAKARAN • Shared by Adarsh Divakaran
PEP 779: Free-Threaded Python (Accepted)
Free-threaded Python has been upgraded from experimental to part of the supported build. This quick quote from a longer discussion covers exactly what that means.
SIMON WILSON
PSF Board Election Schedule
It is time for the Python Software Foundation Board elections. Nominations are due by July 29th. See the article for the full election schedule and deadlines.
PYTHON SOFTWARE FOUNDATION
Exploring Python’s list Data Type With Examples
In this video course, you’ll dive deep into Python’s lists: how to create them, update their content, populate and grow them – with practical code examples.
REAL PYTHON course
Write Pythonic and Clean Code With namedtuple
Discover how Python’s namedtuple lets you create simple, readable data structures with named fields you can access using dot notation.
REAL PYTHON
Execute Your Python Scripts With a Shebang
In this video course, you’ll learn when and how to use the shebang line in your Python scripts to execute them from a Unix-like shell.
REAL PYTHON course
All About the TypedDict
Are you fan of type hinting in Python? Learn how to add typing to a dictionary with different types of keys.
MIKE DRISCOLL
Projects & Code
smartypants.py: Plain ASCII to “Smart” Punctuation
GITHUB.COM/JUSTINMAYER
nbdev: Create Delightful Software With Jupyter Notebooks
GITHUB.COM/ANSWERDOTAI
tournaments: Web-Based Tournament Management
GITHUB.COM/KOSMOTIVE
bulletchess: High Performance Python Chess
GITHUB.COM/ZEDECKJ
pexpect: Control Interactive Programs in a Pseudo-Terminal
GITHUB.COM/PEXPECT
Events
Weekly Real Python Office Hours Q&A (Virtual)
June 25, 2025
REALPYTHON.COM
PyCamp Leipzig 2025
June 28 to June 30, 2025
BARCAMPS.EU
Launching Python Katsina Community
June 28 to June 29, 2025
PYTHONKATSINA.ORG
PyDelhi User Group Meetup
June 28, 2025
MEETUP.COM
Workshop: Creating Python Communities
June 29 to June 30, 2025
PYTHON-GM.ORG
PyCon Colombia 2025
July 4 to July 7, 2025
PYCON.CO
Happy Pythoning!
This was PyCoder’s Weekly Issue #687.
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