NumPy where(), Python & R, HTTP Clients, and More

#647 – SEPTEMBER 17, 2024

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How to Use Conditional Expressions With NumPy where()
This tutorial teaches you how to use the where() function to select elements from your NumPy arrays based on a condition. You’ll learn how to perform various operations on those elements and even replace them with elements from a separate array or arrays.
REAL PYTHON

PythonistR: A Match Made in Data Heaven
In data science you’ll sometimes hear a debate between R and Python. Cosima says ‘why not choose both?’ She outlines a data pipeline that uses the best tool for each job.
COSIMA MEYER

Transcribe Audio in 5 Lines of Code

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Python HTTP Clients: Requests vs. HTTPX vs. AIOHTTP
Learn about the differences between Requests, HTTPX, and AIOHTTP, and when to use each library for your Python projects.
GEORGES HAIDAR

Quiz: Generate Images With DALL·E and the OpenAI API
In this quiz, you’ll test your understanding of generating images with DALL·E by OpenAI using Python. You’ll revisit concepts such as using the OpenAI Python library, making API calls for image generation, creating images from text prompts, and converting Base64 strings to PNG image files.
REAL PYTHON

Quiz: The Walrus Operator: Python’s Assignment Expressions
In this quiz, you’ll test your understanding of the Python Walrus Operator. This operator was introduced in Python 3.8, and understanding it can help you write more concise and efficient code.
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Python Releases 3.12.6, 3.11.10, 3.10.15, 3.9.20, and 3.8.20
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Python Release Python 3.13.0rc2
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Articles & Tutorials

Python Community Divided Over CoC Enforcement
Over the last few months there has been a lot of back and forth in the Python community, especially on the forums, around changes to bylaws and how the Code of Conduct is enforced. This article covers the history and context of the events.
JAKE EDGE

Django: Rotate Your Secret Key, Fast or Slow
Django’s SECRET_KEY setting is used for cryptographic signing in various places, such as for session storage and password reset tokens. If you need to rotate it you can allow read-only use of the old key to smooth the transition.
ADAM JOHNSON

Posit Connect - Help Your Analytics Team Share and Collaborate
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Multiversion Python Thoughts
Armin has played around with enabling multiple versions of a library to be installed for the same instance of Python in the past, and recent feature additions to uv are making it come closer to fruition.
ARMIN RONACHER

How We Made Notebooks Load 10 Times Faster
“When we received feedback our Notebooks UI was taking too long too load, our engineers dove into ways to improve the developer experience — bringing some load times from 30 seconds down to less than one.”
LUIS NEVES

When to Use .__repr__() vs .__str__() in Python
In this video course, you’ll learn the difference between the string representations returned by .__repr__() vs .__str__() and understand how to use them effectively in classes that you define.
REAL PYTHON course

Python Bytes Episode #400
The Python Bytes podcast just delivered show #400. This is a huge accomplishment. This episode celebrates the achievement, and also covers: Python 3.13RC, Docker with uv, the humanize project, and more.
PYTHON BYTES podcast

Improved print Readability With pprint
The pretty print module (pprint) provides more readable output for complex data structures and this post shows you how to use the library and what you can get out of it.
JUHA-MATTI SANTALA

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Switching From pyenv to uv
Will has recently switched from using a variety of packaging tools to just using uv. This post is a summary of what needed to change when going from pyenv to uv.
WILL KAHN-GREENE

uv Under Discussion on Mastodon
There is a deep conversation going on about the longevity of uv on Mastodon and for those not on the platform, Simon has summarized it.
SIMON WILLISON

Why Not Comments
This post talks about why you might want to include information in your code comments about why you didn’t take a particular approach.
HILLEL WAYNE

How to Build a Perfect Docker Image for a Poetry Project
This article describes how to build a secure, fast to build, and lightweight Docker image for your Poetry-based project
CODEMAGEDDON • Shared by Sergey

Python macOS Framework Builds
Glyph explains just what a Framework is on macOS and why CPython on macOS should be built that way.
GLYPH LEFKOWITZ

Projects & Code

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PSP (Python Scaffolding Projects)
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pocketpy: Portable Python 3.x Interpreter in Modern C
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graphiti: Build Dynamic, Temporally-Aware Knowledge Graphs
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picows: Ultra-Fast Websocket Client and Server for Asyncio
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django-cotton: Component Based Design to Django Templates
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Pydantic, PSF Office Hours, Polars, and More

Tuesday, September 10, 2024

Using Pydantic to Simplify Python Data Validation #646 – SEPTEMBER 10, 2024 VIEW IN BROWSER The PyCoder's Weekly Logo Using Pydantic to Simplify Python Data Validation Discover the power of

Astronomy, Language Summit, Built-ins, and More

Tuesday, September 3, 2024

Using Astropy for Astronomy With Python #645 – SEPTEMBER 3, 2024 VIEW IN BROWSER The PyCoder's Weekly Logo Using Astropy for Astronomy With Python This course covers two problems from introductory

Astrophysics, pyproject.toml, Query Languages, and More

Tuesday, August 27, 2024

Exploring Astrophysics in Python With pandas and Matplotlib #644 – AUGUST 27, 2024 VIEW IN BROWSER The PyCoder's Weekly Logo Exploring Astrophysics in Python With pandas and Matplotlib This course

Scrapy Extensions, REST APIs, Django Sub-Commands, and More

Tuesday, August 20, 2024

Using a Custom Scrapy Extension to Log to a DB #643 – AUGUST 20, 2024 VIEW IN BROWSER The PyCoder's Weekly Logo Using a Custom Scrapy Extension to Log to a DB The Scrapy crawl stat logs are useful

Testing with nox, Async Iterators, Log Propagation, and More

Tuesday, August 13, 2024

Testing Coverage and Using `nox` #642 – AUGUST 13, 2024 VIEW IN BROWSER The PyCoder's Weekly Logo Testing Coverage and Using nox This is part 9 in an in-depth series on testing. This part talks