QuantStack

Backstage interview - Yann Lechelle www.pydata.org PyData is an educational program of NumFOCUS, a 501(c)3 non-profit organization in the United States. PyData provides a forum for the international community of users and developers…

Backstage interview: @ylechelle.bsky.social

Ian explained how :probabl turned scikit-learn (a widely used open-source tool) into a sustainable business while keeping it open. His message: Open source is Europe’s best shot at tech independence, from open data to open hardware.

youtu.be/VMOpvJei4hk

And this was all done by @antoineprv.bsky.social , whose BlueSky account isn't very discoverable. 😊

GH-48277: [C++][Parquet] unpack with shuffle algorithm by AntoinePrv · Pull Request #47994 · apache/arrow Rationale for this change The current bit-unpacking algorithm (which is implemented as a C++ code generator script in Python) does not fully leverage SIMD operations: all loads and some bitshifts u...

At @quantstack.bsky.social we designed novel bit-unpacking SIMD optimizations for @arrow.apache.org and #ApacheParquet, and implemented them entirely using C++ metaprogramming instead of Python-based code generation.

We'll publish a deep dive blog post soon.

github.com/apache/arrow...

Expanding Geospatial Workflows in JupyterGIS: STAC Browsing and Story Maps Since its initial announcement less than two years ago, JupyterGIS has been a growing effort to bring interactive geospatial workflows into…

@geojupyter.bsky.social 's JupyterGIS just got two new features: built-in STAC browsing and Story Maps. Discover #geospatial data and tell map-based stories all from @jupyter.org!

Try it live in your browser: notebook.link/@quantstack/....

Read more on the Project Jupyter Blog: shorturl.at/UXE8s

JupyterLite Officially Joins Project Jupyter! We are thrilled to announce that JupyterLite is now an official part of Project Jupyter. This milestone marks a significant step forward…

🎉 JupyterLite is now part of Project Jupyter!

Run Jupyter notebooks directly in your browser: no server, no setup.

Many thanks to the JupyterLite contributors and supporters like QuantStack, Bloomberg and the Gates Foundation.

🔗 blog.jupyter.org/jupyterlite-...

Introducing notebook.link: The Future of Notebook Sharing Reimagining how you share, collaborate, and run Jupyter notebooks — all in your browser.

🧪 Awesome announcement from the @quantstack.bsky.social team! Introducing notebook.link, share your computational notebook and have them run directly in the browser with no setup, powered by Jupyterlite and the xeus stack.

#datascience #scientificcomputing

A viewer for Parquet, SQLite, and Avro files in JupyterLab.
Check out our new JupyterLab extension: Arbalister. 🏹
Built upon Apache Datafusion, @jupyter.org , and @arrow.apache.org , it lazily fetches rows so that you can view files larger than memory!

blog.jupyter.org/instantly-vi...

We are thrilled to introduce notebook.link, a platform that lets you create, share, and run Jupyter notebooks instantly in your browser.

Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.

📖 Read the full story: medium.com/@QuantStack/...

Jeremy Tuloup & Nicolas Brichet - Browser-based AI workflows in Jupyter YouTube video by PyData

Together with @nicolasbrichet.bsky.social at @pydataparis.bsky.social 2025, we presented a vision for what AI @jupyter.org can look like, with a focus on forward-looking, browser-based AI workflows 🤖

The recording is now available on YouTube, happy watching!

www.youtube.com/watch?v=cKeu...

JupyterLite now supports any-llm-gateway as a backend for its AI static front-end.

any-llm-gateway routes LLM requests through a single gateway rather than tying usage to one provider.

Integration details: link.mozilla.ai/jupyterlite-...

Teaching a Billion People to Code: How JupyterLite Is Scaling the Impossible QuantStack, an “almost accidental startup,” is building a serverless distro of JupyterLab for Jupyter’s global adoption.

@quantstack.bsky.social, an “almost accidental startup,” is building a serverless distro of @jupyter.org for Jupyter’s global adoption.

Feat. @sylvaincorlay.bsky.social

All talks are now online - perfect for cozy learning by the fire. 🎄🔥
🎁 Watch here: www.youtube.com/playlist?lis...
Missed a session? Now’s your chance! Share your favorites and keep the inspiration going.
Wishing you a season of learning and innovation!

🚀 JupyterLite 0.7 is now available!

- Support for workspaces
- Audio / video playback
- Interrupt execution queue
- Basic notebook export
- Notebook scrolling fixes

➡️ Try it: jupyter.org/try-jupyter
➡️ Walkthrough video: www.youtube.com/watch?v=utNt...
➡️ Blog post: blog.jupyter.org/jupyterlite-...

SIMD coding is hard: platforms, inconsistencies, lane constraints... but xsimd abstracts a lot away. With my first contributions, I improved byte shuffling, now available in the latest 14.0 release.
#C++ #SIMD #xsimd #openSource

Teaching a Billion People to Code: How JupyterLite Is Scaling the Impossible QuantStack, an “almost accidental startup,” is building a serverless distro of JupyterLab for Jupyter’s global adoption.

@quantstack.bsky.social, an “almost accidental startup,” is building a serverless distro of @jupyter.org for Jupyter’s global adoption.

Feat. @sylvaincorlay.bsky.social

JupyterLab 4.5 and Notebook 7.5 are available! JupyterLab 4.5 has been released! This new minor release of JupyterLab includes 51 new features and enhancements, 81 bug fixes, 44…

JupyterLab 4.5 and Jupyter Notebook 7.5 are here! 🎉

Highlights 🎁

- Enhanced notebook scrolling behavior
- Native audio and video support
- New Terminal search
- Debugger, Notebook and File Browser improvements

Check out the blog post to learn more!

blog.jupyter.org/jupyterlab-4...

QuantStack will be co-hosting Jupyter community workshop on Jupyter-AI in partnership with Apple and AWS. Check out the blog post for more details and stay tuned.

Jupyter Community Workshops: Early 2026 The Jupyter Community Building Working Group is happy to announce the Jupyter Community Workshops selected for funding in early 2026. The…

Project Jupyter has funded a series of community workshops for 2026, covering a broad range of subjects from Jupyter-AI to JupyterHub, Myst Markdown, and security. Check out our announcement on the Jupyter blog for more details.

blog.jupyter.org/jupyter-comm...

The Sovereign Tech Agency Invests in Apache Arrow’s Future with QuantStack We are thrilled to announce that the Sovereign Tech Fund is providing critical funding to sustain and improve Apache Arrow, an essential…

The Sovereign Tech Agency backs Apache Arrow's Future with QuantStack!

This funding will empower Arrow maintainers at QuantStack, @pitrou.net and @raulcumplido.bsky.social, to advance security, modularity, and long-term sustainability of @arrow.apache.org.

medium.com/@QuantStack/...

I will speak about probabilistic regressions, @skrub-data.bsky.social and skore contributors will also present their libraries. Come join us!

📢 Talk Announcement

"Architecting Scalable Multi-Modal Video Search", by Sebastiano Miliardo and Pietro Piccini.

📜 Talk info: pretalx.com/pydata-paris-2025/talk/HVEWT9
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets

Apache Arrow Summit, Thu, Oct 2, 2025, 9:30 AM | Meetup The day after the PyData Paris conference, we’re excited to host the first-ever Apache Arrow Summit - a gathering dedicated to fostering collaboration and innovation within

The schedule for the Apache Arrow Summit Paris 25 (October 2nd) is out: www.meetup.com/pydata-paris....
The event is hosted by
@pydataparis.bsky.social organizer of pydata.org/paris2025 (September 30th - October 1st)

We are looking forward to seeing you there and talking about all things Arrow.

📢 Talk Announcement

"Advancements in optimizing ML Inference at CERN", by Sanjiban Sengupta.

📜 Talk info: pretalx.com/pydata-paris-2025/talk/BZGUZN
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets"

📢 Talk Announcement

"Open-source Business", by @sylvaincorlay.bsky.social from @quantstack.bsky.social and @ylechelle.bsky.social from @probabl.ai

📜 Talk info: pretalx.com/pydata-paris-2025/talk/LMTCZS
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets

📢 Talk Announcement

"Big ideas shaping scientific Python: the quest for performance and usability", by Ralf Gommers.

📜 Talk info: pretalx.com/pydata-paris-2025/talk/YBFPCR
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets

And the great teams at @iiasa.ac.at and @quantstack.bsky.social have gone even a step further generating amazing visuals of our results.

Check out cdr.apps.ece.iiasa.ac.at/story/pruden... to dive in!