trevor manz
@manzt.sh
middle child, creator of anywidget.dev
building @marimo.io; prev @harvard.edu
building @marimo.io; prev @harvard.edu
👀 preview: @marimo.io notebooks are Python first inside @vscode.dev.
we're also integrating managed sandboxed environments for PEP 723 notebooks, powered by uv ofc. forget venvs
we're also integrating managed sandboxed environments for PEP 723 notebooks, powered by uv ofc. forget venvs
October 16, 2025 at 9:21 PM
👀 preview: @marimo.io notebooks are Python first inside @vscode.dev.
we're also integrating managed sandboxed environments for PEP 723 notebooks, powered by uv ofc. forget venvs
we're also integrating managed sandboxed environments for PEP 723 notebooks, powered by uv ofc. forget venvs
look ma, @marimo.io 🤝 cursor (w/ the upcoming @vscode.dev extension). things are starting to come together...
October 3, 2025 at 9:30 PM
look ma, @marimo.io 🤝 cursor (w/ the upcoming @vscode.dev extension). things are starting to come together...
a new life for my 2019 macbook pro
September 24, 2025 at 1:33 PM
a new life for my 2019 macbook pro
![A play on Magritte’s painting: Python code df = df[df["a"] == 1] above the caption “Ceci n’est pas une pipe.”](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:lf6ut5voripflo7pbdx6fyzh/bafkreibbrfw6itzzs52f4m7fmpcj2jxat2osm6gn7fl724wsegmmikprgm@jpeg)
i’m used to hearing from strangers when my open-source "fails" them… this made my day
September 22, 2025 at 3:08 PM
i’m used to hearing from strangers when my open-source "fails" them… this made my day
still lots to do... but we're cooking on a native @vscode.dev extension for @marimo.io notebooks
August 13, 2025 at 9:52 PM
still lots to do... but we're cooking on a native @vscode.dev extension for @marimo.io notebooks
learning a new api? `mo.inspect()` your objects in
@marimo.io. no more dir() / help()-ing around `
@marimo.io. no more dir() / help()-ing around `
August 6, 2025 at 6:07 PM
learning a new api? `mo.inspect()` your objects in
@marimo.io. no more dir() / help()-ing around `
@marimo.io. no more dir() / help()-ing around `
Observable-like cell minimap coming soon to a @marimo.io notebook near you 🫡
July 23, 2025 at 12:03 AM
Observable-like cell minimap coming soon to a @marimo.io notebook near you 🫡
@marimo.io now has a tree-based UI for uv environments
add/remove/upgrade deps the uv way — no more flat pip-style lists or accidentally pip-ing your env
add/remove/upgrade deps the uv way — no more flat pip-style lists or accidentally pip-ing your env
June 24, 2025 at 3:30 PM
@marimo.io now has a tree-based UI for uv environments
add/remove/upgrade deps the uv way — no more flat pip-style lists or accidentally pip-ing your env
add/remove/upgrade deps the uv way — no more flat pip-style lists or accidentally pip-ing your env
spending some time on our uv integration in @marimo.io – starting with things like this selector for package “extras”
what’s frustrated you about using packages in notebooks?
what’s frustrated you about using packages in notebooks?
June 11, 2025 at 3:03 PM
spending some time on our uv integration in @marimo.io – starting with things like this selector for package “extras”
what’s frustrated you about using packages in notebooks?
what’s frustrated you about using packages in notebooks?
preparing for some potentially unhinged things...
June 10, 2025 at 3:45 PM
preparing for some potentially unhinged things...
sorting row order of a an altair plot in @marimo.io ...
May 26, 2025 at 5:29 PM
sorting row order of a an altair plot in @marimo.io ...
it's actually a pretty fun ui challenge! here's a `Sortable` list alternative...
gist.github.com/manzt/1ca8f8...
gist.github.com/manzt/1ca8f8...
May 26, 2025 at 4:56 PM
it's actually a pretty fun ui challenge! here's a `Sortable` list alternative...
gist.github.com/manzt/1ca8f8...
gist.github.com/manzt/1ca8f8...
May 26, 2025 at 4:24 PM
@frank.computer walking #PyConUS through the humbling experience of navigating charts with a screen reader. excellent talk!
May 16, 2025 at 7:08 PM
@frank.computer walking #PyConUS through the humbling experience of navigating charts with a screen reader. excellent talk!
usually i’m all for “use whatever works for you,” but it’s tough seeing someone trip over Python stuff knowing…
April 23, 2025 at 3:14 PM
usually i’m all for “use whatever works for you,” but it’s tough seeing someone trip over Python stuff knowing…
packaged up uv to learn about distributing binaries on npm (it's convoluted)
wild how as portable binary, everything you need to be productive with ~Python~… can be accessible from ~JavaScript~ ecosystem (npm/pnpm/bun/deno/yarn). No extra install necessary:
wild how as portable binary, everything you need to be productive with ~Python~… can be accessible from ~JavaScript~ ecosystem (npm/pnpm/bun/deno/yarn). No extra install necessary:
April 17, 2025 at 3:37 PM
packaged up uv to learn about distributing binaries on npm (it's convoluted)
wild how as portable binary, everything you need to be productive with ~Python~… can be accessible from ~JavaScript~ ecosystem (npm/pnpm/bun/deno/yarn). No extra install necessary:
wild how as portable binary, everything you need to be productive with ~Python~… can be accessible from ~JavaScript~ ecosystem (npm/pnpm/bun/deno/yarn). No extra install necessary:
i explored +130k artworks from the National Gallery of Art with polars, observableplot, anywidget, react...
turns out there’s some neat public works history hiding in there. maybe you’ll find an (CC0!) upgrade for that default OS wallpaper 🙃
turns out there’s some neat public works history hiding in there. maybe you’ll find an (CC0!) upgrade for that default OS wallpaper 🙃
April 1, 2025 at 6:34 PM
i explored +130k artworks from the National Gallery of Art with polars, observableplot, anywidget, react...
turns out there’s some neat public works history hiding in there. maybe you’ll find an (CC0!) upgrade for that default OS wallpaper 🙃
turns out there’s some neat public works history hiding in there. maybe you’ll find an (CC0!) upgrade for that default OS wallpaper 🙃
one tip i give folks starting with anywidget: invest time in understanding ESM. get comfortable spotting what is, and ~especially~ what isn't.
tooling lets us write plenty of code that no JS runtime could ever execute, and it leads to a ton of indirection and misunderstanding for beginners.
tooling lets us write plenty of code that no JS runtime could ever execute, and it leads to a ton of indirection and misunderstanding for beginners.
March 18, 2025 at 9:37 PM
one tip i give folks starting with anywidget: invest time in understanding ESM. get comfortable spotting what is, and ~especially~ what isn't.
tooling lets us write plenty of code that no JS runtime could ever execute, and it leads to a ton of indirection and misunderstanding for beginners.
tooling lets us write plenty of code that no JS runtime could ever execute, and it leads to a ton of indirection and misunderstanding for beginners.
I feel like it should be more tolerant to semver ranges. Probably some issue with how I'm publishing the extension! (I'm on 1.98.1).
March 12, 2025 at 11:55 PM
I feel like it should be more tolerant to semver ranges. Probably some issue with how I'm publishing the extension! (I'm on 1.98.1).
i made my first vs code extension for juv! marketplace.visualstudio.com/items?itemNa...
it detects notebooks with PEP 723 metadata and prompts you to create/sync a venv. you can manage deps directly in the notebook toolbar to author standalone notebooks of your own:
it detects notebooks with PEP 723 metadata and prompts you to create/sync a venv. you can manage deps directly in the notebook toolbar to author standalone notebooks of your own:
March 12, 2025 at 5:23 PM
i made my first vs code extension for juv! marketplace.visualstudio.com/items?itemNa...
it detects notebooks with PEP 723 metadata and prompts you to create/sync a venv. you can manage deps directly in the notebook toolbar to author standalone notebooks of your own:
it detects notebooks with PEP 723 metadata and prompts you to create/sync a venv. you can manage deps directly in the notebook toolbar to author standalone notebooks of your own:
one of the first things I add to any ts project now is an `assert` utility: manzt.sh/assert.js
type assertions (`foo as string`) blindly tell the type checker you know more than it does. `assert` is a real runtime check with the same narrowing effect. you'll thank me later when debugging!
type assertions (`foo as string`) blindly tell the type checker you know more than it does. `assert` is a real runtime check with the same narrowing effect. you'll thank me later when debugging!
March 11, 2025 at 2:11 AM
one of the first things I add to any ts project now is an `assert` utility: manzt.sh/assert.js
type assertions (`foo as string`) blindly tell the type checker you know more than it does. `assert` is a real runtime check with the same narrowing effect. you'll thank me later when debugging!
type assertions (`foo as string`) blindly tell the type checker you know more than it does. `assert` is a real runtime check with the same narrowing effect. you'll thank me later when debugging!
it's also faster as well... gist.github.com/manzt/2337d6...
March 10, 2025 at 3:27 AM
it's also faster as well... gist.github.com/manzt/2337d6...
with web `DecompressionStream` (developer.mozilla.org/en-US/docs/W...), you don’t need a dependency to decode gzipped or deflated data (e.g., pako, fflate).
just pipe the data into a new `Response`:
just pipe the data into a new `Response`:
March 10, 2025 at 3:01 AM
with web `DecompressionStream` (developer.mozilla.org/en-US/docs/W...), you don’t need a dependency to decode gzipped or deflated data (e.g., pako, fflate).
just pipe the data into a new `Response`:
just pipe the data into a new `Response`:
juv v0.3.3 lets you derive venv for notebooks and standalone scripts, allowing better support by editors/IDEs.
```
juv venv --from=Untitled.ipynb
or
juv venv --from=foo.py
```
and select the `.venv` in your editor.
```
juv venv --from=Untitled.ipynb
or
juv venv --from=foo.py
```
and select the `.venv` in your editor.
March 6, 2025 at 8:58 PM
juv v0.3.3 lets you derive venv for notebooks and standalone scripts, allowing better support by editors/IDEs.
```
juv venv --from=Untitled.ipynb
or
juv venv --from=foo.py
```
and select the `.venv` in your editor.
```
juv venv --from=Untitled.ipynb
or
juv venv --from=foo.py
```
and select the `.venv` in your editor.