We recently reviewed a pull request from contributor Martin Saizar that refactored our Python tests. The goal was to enable the PyTest (PT) linter rule in Ruff, our code formatter and linter.
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On a recent flight from Japan to the Philippines, Pydanny and I started coding a new project. The result is **AirDragon**, a layout and component library for the Air web framework.
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I co-led the first ever Air web framework sprint in Davao, Philippines, as part of Day 2 of PyCon Davao on October 26, 2025.
Continue reading →Slides from my keynote at PyCon Davao 2025, the first regional Filipino conference for Python programming enthusiasts.
Continue reading →Air is a pioneering AI-first Python web framework that represents the next evolution in web frameworks to be deeply AI-native.
Continue reading →If you need to run Python applications from PyPI without installing them permanently, uvx provides a convenient way to execute Python tools without having to manage dependencies manually.
Continue reading →Here is a sample settings.json file for the Gemini CLI, configured with the Git and GitHub MCP servers.
Continue reading →How to retrieve the CSS classes for a FastHTML FastTag instance.
Continue reading →How to get JSON into a local SQLite database fast.
Continue reading →How to find and kill an old process running on a particular port.
Continue reading →Continuing the Sentence Transformers exploration, I use a cross-encoder model to rank my notebooks by similarity to search queries.
Continue reading →Here I use sentence transformers and a bi-encoder model to encode my notebooks as embeddings and implement semantic search.
Continue reading →When working in notebooks, you'll occasionally need to access the notebook's own filename. Here's code to do it, which I've verified works in Jupyter Notebook Classic.
Continue reading →How to record screen capture videos on Mac OS, using the screencapture command or the Cmd+Shift+5 shortcut.
Continue reading →Happy Pi Day. Here's pi from the stdlib math module and from Numpy.
Continue reading →How to remove stale .pyc files and __pycache__ directories, using uvx + pyclean.
Continue reading →Here I create a local titlecase model based on Mistral, using a local Ollama modelfile and a solid prompt.
Continue reading →Title-casing text is one of those hard problems no one ever gets right, yet no one considers worthy enough to solve with AI. Here I experiment to see if I can improve upon the latest best solutions with a local Ollama modelfile and a solid prompt.
Continue reading →I thought I had completely lost my new iteration on my notebook titler tool, but it turns out I'm finding bits and pieces in various places. Here I try to put it together again.
Continue reading →I fell off the wagon with creating a new notebook every day, but it's not too late to get back on. Today's post is for me to figure out how to make this more sustainable.
Continue reading →Now that I have a lot of notebooks, it would be nice to have a more compact index page. I want to see more of my posts from mobile all at once. I'm going to prototype it in Tailwind.
Continue reading →Here I play with using Pynput as a system level keylogger, from within my Jupyter notebook version of this.
Continue reading →I add a mini-nav to the vanilla non-MonsterUI version of notebook detail pages (used for in-depth CSS experiments). I also now export main.py from within this notebook.
Continue reading →I make a lightweight vanilla InlineNav FT with FastHTML, using the HTML nav element and as minimal styling as I can get away with.
Continue reading →Fastcore's call_parse decorator turns Python functions into CLI tools quickly. It's nowhere near as fancy as Typer or Click, but it's super quick to use.
Continue reading →Here I turn this Jupyter notebook into a Python script, using nbdev's nb_export function from the notebook itself.
Continue reading →A FastHTML app that converts times to different timezones, and to Discord timestamps.
Continue reading →I use Gemini's text-embedding-004 model to generate embeddings for sentences. Then I define a cosine similarity function and see what it returns for a few related and unrelated sentences.
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I'm starting to accumulate many UntitledX.ipynb files. Here I use the Gemini 1.5 Flash language model from Google to rename each one based on its contents.
Continue reading →This is a proof-of-concept of moving MonsterUI's HTML class injection from lxml post-processing to a custom Mistletoe renderer. Looks like we can get 3x faster Markdown rendering using this simple MonsterHTMLRenderer vs. parsing the rendered HTML to inject the classes.
Continue reading →Just little tweaks to make sure the site still works with all the new MonsterUI stuff.
Continue reading →Here I update audrey.feldroy.com with some of the latest MonsterUI text presets.
Continue reading →I define various useful datetime utilities with the help of fastcore's L and map, and functools' partial. Then I extend that to generate Discord timestamps, which localize Unix timestamps to the reader's timezone.
Continue reading →Here I improve audrey.feldroy.com in small, subtle ways.
Continue reading →Using Pygments, CSS and Ruff to improve how code blocks are displayed on my daily notebook blog.
Continue reading →Here I clean up the code, back-integrate the manual fixes I've since made, and reduce the steps it takes to export.
Continue reading →Here I use the Python Imaging Library to create and display an image in-notebook, so that it's rendered as part of the blog post on audrey.feldroy.com.
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My first MonsterUI notebook wasn't rendering correctly. I started to debug it in this notebook, but ended up just using this as a test notebook for the next one.
Continue reading →Here in this Jupyter notebook I rewrite audrey.feldroy.com and use nb_export to export it as my new main.py for arg-blog-fasthtml.
Continue reading →Iterating through the ButtonT enum to show all MonsterUI button types visually.
Continue reading →Can we customize a FastHTML app to set different headers when rendering notebooks with nb2fasthtml, based on what the notebook actually needs for its headers?
Continue reading →Exploring how to make basic SVG animations work with FastHTML.
Continue reading →How to make a website check the user's preferred mode and set the background appropriately.
Continue reading →Working with Anki flashcard decks in Python, with genanki to work with the decks and fastcore for ease of use.
Continue reading →Demo of adding sounds to a FastHTML app with Tone.js. Sounds make web apps come alive and feel interactive.
Continue reading →FastHTML MonsterUI example app that uses Tone.js to make different alarm clock sounds.
Continue reading →A mathematical breakdown of cosine similarity, with copy-pastable LaTeX.
Continue reading →SQLite full text search setup via APSW for all the notebooks on this website, inspired by the APSW FTS5 Tour).
Continue reading →The SQLite FTS5 (full-text search) extension includes the built-in tokenizers unicode61, ascii, porter, and trigram, implemented in fts5_tokenize.c. APSW provides a Python API to use those.
Continue reading →I've made good progress on creating a notebook every day. Now I have so many notebooks that my index page needs an overhaul, including:
Continue reading →I'm taking inventory of all the Command Mode and dual-mode nbclassic keyboard shortcuts on macOS, with my random musings about each. This is part of my deliberate practice to master all of the useful ones, and will serve as a reference for myself later.
Continue reading →In this tutorial we'll look at the simplest routes and route handlers you can create with FastHTML. We'll define the handlers as little functions, and then call them as we would any other Python function. After that, we'll make simple GET requests to a simple index route/handler, a parameterized one, and a parameterized one with a redirect.
Continue reading →I'm starting with a snippet of code from the bottom of execnb's 01_nbio.ipynb, breaking it down into pieces and seeing each part.
Continue reading →I get so lazy about title tags. The point of today's notebook is to make me less lazy, so I actually fix the title of this site. Oh, and to explore Title and Titled in FastHTML.
Continue reading →I just changed my Bluesky to @audrey.feldroy.com. To verify my domain ownership, I added this route handler to my FastHTML website:
Continue reading →FastHTML provides default headers for every page, which are also fully customizable. This notebook explores how this works.
Continue reading →In my terminal (Ghostty) when I run shell scripts that update multiple repos, I get asked my SSH key passphrase over and over. It gets annoying with 20+ repos.
Continue reading →I prompted Claude 3.5 Sonnet to make an HTML and vanilla JS birthday app for my daughter who just turned six. Then I figured out how to show the artifact inline in a Jupyter notebook.
Continue reading →The zip docs say that zip(*iterables, strict=False):
Continue reading →Adding a settings bar with a volume slider and waveform selector to the piano.
Continue reading →In Part 1 we defined piano keys. Now let's improve them with hover effects, mouse events, and JavaScript audio.
Continue reading →My adaptation of https://developer.mozilla.org/en-US/play to FastHTML, with improvements.
Continue reading →## Simple Command Substitution
Continue reading →I needed a quick note box for the index page of this site, without affecting the CSS of my notebooks that explore weird CSS stuff deeply.
Continue reading →This notebook uses images in every possible way.
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## Variables
Continue reading →When using pico=False and no CSS framework, a FastHTML page doesn't look great. Can we use minimal typography to make it look decent, without dependencies?
Continue reading →I have Jupyter notebooks in nbs/. I want to turn them into cards from the filenames, without having to read the file contents.
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Continue reading →## Understand the Problem
Continue reading →## Understand the Problem
Continue reading →This notebook is a SolveIt-style exploration of https://github.com/AnswerDotAI/execnb/. Here I am following the SolveIt process in a Jupyter notebook to learn new things.
Continue reading →Having fun with fastcore's L (list) class and holiday lyrics.
Continue reading →Exploring how execnb reads notebooks and nb2fasthtml renders them, to understand the tools I'm building on.
Continue reading →Here we are checking the numbers from our daughter's snowman card to Daddy. She gave him math problems to solve and a snowman joke.
Continue reading →I'm here to learn the new web framework FastHTML by Jeremy Howard, and I'm using Claudette to help me explore it.
Continue reading →Studying https://claudette.answer.ai/
Continue reading →Studying https://docs.fastht.ml/tutorials/by_example.html more
Continue reading →My study of the @delegates decorator and GetAttr from fastcore.
Continue reading →My early attempts to figure out auth in FastHTML. Things have likely changed a lot since.
Continue reading →My early exploration of the xtend notebook in FastHTML.
Continue reading →Reading through fastcore's xml.py source to figure out how FastHTML components print and render, and what to_xml and highlight do.
Continue reading →Caution: I’ve learned better patterns since I wrote this. Leaving this here for posterity.
Continue reading →A painting of a squishy, colorful world.
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I made this Kotlin cheatsheet today:
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I've been using Android phones for several years now, and it has always been on my bucket list to write myself some productivity apps. This morning I thought I'd get reacquainted with Android app development.
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I feel like Jupyter notebooks would be really nice for blogging or publishing "Today I Learned" posts. I had heard about Fastpages before via Jeremy Howard's blog or YouTube videos, but seeing that it was deprecated in favor of nbdev, I decided to try nbdev.
Continue reading →In data science, EDA is an exploratory analysis of a data set. The goal is to better understand the stories that the data tells, and to uncover interesting ideas that may turn into new hypotheses to explore.
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I 3D-printed these earrings using a cool little hack of setting top and bottom wall thickness to 0.
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My husband Daniel and I created this piece together during the holidays, and I forgot to post it so I'm doing so now. It started with a pen-and-ink drawing I drew. Then we transformed it several times, alternating photocopier distortion, gouache, watercolor, house paint, more pen and ink, and collage over and over.
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Daniel and I painted these butterflies with gouache, pastels, and a brush pen. Originally my intent was to experiment with butterfly shapes for republishing my butterfly book, but then I decided to play around with brush shapes and mark-making. Daniel joined in the fun of giving the butterflies their beautiful coloration with me.
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Most of this cover design is admittedly from 2013. I updated parts of it. It may change dramatically as we flesh out the book, or it may stay mostly the same. I don't know yet.
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We're moving all five of our fantasy novels to a new publishing imprint! Daniel and I came up with the name "Impossible Hero Books" and created this logo together on the plane ride back home.
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My husband Daniel designed this lovely book cover. The veggies are my illustrations from the book interior.
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I'm so proud of my daughter, Uma. She's so strong, smart, and lovely. Here she is at her first birthday party in her spacesuit. She's only been with me and Daniel for a short time, but it feels like our lives have just begun. She makes every new day so meaningful.
Continue reading →This is the first page of Veggies for the Modern Baby, the book we're making for our baby daughter Uma. Pictured are the lyrics to the song Danny and I sing while feeding her.
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Our logo for Roy Greenfeld, Inc. has been evolving. This is the latest iteration:
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This painting represents my recent experiences. Paths in various uncertain directions are overlapped with spiraling curves revisiting the past and building upon it. Along the way, beauty shows up in the most unexpected places.
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Today I experimented with making timelapse video and iMovie effects.
Continue reading →I love using recycled materials. I cut out these snowflakes from the heavy cardstock backing piece of a pack of markers. I estimate it as 120-150lb cardstock. The 3-inch piece cut well, but the 2-inch one didn't cut cleanly.
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SciPy has tools for creating Voronoi tessellations. Besides the obvious data science applications, you can use them to make pretty art like this:
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In Django terms, a QuerySet is an iterable of database records. What's nice about them is that they are evaluated only when you're ready for the results.
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A common thing to do in Python is to go through a directory tree, opening each file and doing something with the file's text. Here's what to do when you hit a UnicodeDecodeError from accidentally opening a binary file.
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Daniel and I just returned from a trip to San Antonio, Texas, where we taught one of our intensive Django training workshops at Lackland Air Force Base.
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This weekend, Daniel and I drove down to Ensenada, Mexico to speak and coach at DjangoGirls Ensenada. It was a 2-day workshop for women of any level of experience to get a taste of web application development.
Continue reading →The fourth piece in my series of watercolors inspired by Tolkien's illustrations.
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A simple doodle of circle flowers bending in the wind.
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A third piece inspired by Tolkien's artwork, depicting a plateau with a small house overlooking a gigantic waterfall.
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This is another piece inspired by Tolkien's illustrations. I wanted it to be a scene from another planet, though, so I gave it five suns and tried to make the land a bit otherworldly.
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Few are aware that J. R. R. Tolkien was as great an artist as a writer. His art is incredibly inspiring. It inspired me to paint this piece.
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I've painted yet another tribute to a Chris Foss illustration I'm obsessed with. This version has flowers instead of an explosion, and the asteroid is actually a blue potato.
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For Day 18 of 100 days of watercolor.
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For day 19 of 100 days of watercolor.
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I've been doing hand lettering for a long time as a side hobby. You might have seen some of my lettering before, including the famous Pyladies script logo.
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Here's an earlier snapshot of a work-in-progress version of the Two Scoops of Django 1.8 book cover. This one was a watercolor painting.
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Here's the cover illustration for our latest book, Two Scoops of Django: Best Practices for Django 1.8. It depicts vines growing ice cream cones.
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One of my favorite plates at home has a strawberry pattern printed on it. This is sort of loosely inspired by seeing that pattern almost every day.
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Just playing around with metallic watercolor pencils. They don't really look metallic. They're like regular watercolor pencils, but with the colors just a bit desaturated.
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For Day 12 of my "100 Days of Watercolor" project.
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Book cover for a story about a giant flying dog who drools all over a quiet suburb, causing chaos and evacuations.
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Another fictional book cover. This one is a parody of a real book that you may have heard of :)
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A book cover for a story is about a garden where all the plants have feelings.
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I started writing a short story about flying dogs awhile back. The story is a work-in-progress, but I hope to finish it soon and post it on Wattpad.
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This is a draft of a cover for another short story about food teleportation. For some reason I'm stuck on that idea. Not sure why.
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I have a confession to make. Sometimes when I work on my paintings for the 100 day project, I do them at night right before bed when I'm completely exhausted. My state of mind in these situations is wanting to get the painting over with as quickly as possible so I can get to bed.
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Awhile back, I wrote a humorous story about Danielle and Andrew, two cheese connoisseurs who set out on a pilgrimage in search of the world's greatest cheese.
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Abstract art is deceptively hard to create. It always looks so easy that a child could do it, yet it practice it's one of the hardest things.
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Lately I've been working on the inside design for the paperback version of Into the Brambles.
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Everyone has a default doodle or two that they make when they can't think of what to draw. Sometimes when I can't think of what to draw, my default is ice cream. I blame Two Scoops of Django for this.
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When I close my eyes and picture waves, this is what I imagine. The shells are intentionally oversized because they are giant shellfish.
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I tried to make the light appear foggy and iridescent, with sea sprays glistening in the light.
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I did the cover design for Into the Brambles, the first book of Daniel's forthcoming epic fantasy series The Brambles.
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The Presidio is a large area of parkland on the northwest side San Francisco. It used to be a military base, but now it's occupied by a mixture of residential and commercial buildings. I woke up early today to try painting from a coffee shop there, which turned out to be filled with employees of Intel, ILM, and other Presidio corporate tenants.
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The other day, while I was painting the Golden Gate Bridge in the distance, I kept thinking about how I wanted to get closer to it and then do another painting.
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The Golden Gate Bridge is one of those landmarks that's irresistible to watercolor painters, especially me. Even with all the other closer, brighter scenery around, the bridge and hills of in the far distance lured me to paint them.
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Last year, Danny and I spent almost a month in Split, Croatia. It was the end of the summer, so it was pretty quiet.
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This bird was half of a pair of two, an engagement gift from Aunt Lois in October of 2011.
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Hi! This will be where I post my art: paintings, sculpture, mixed media, woodworking, etc. Enjoy!
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