Upcoming O’Reilly Workshop: Building Data Apps with Streamlit and Copilot (July 2026)
On July 9 (9am–1pm Pacific), I'll be teaching a 4‑hour live workshop for...
Blog
How Remote Work Has Grown — and Shrunk — Since Covid
Remote work surged during Covid — and while it has declined since, it’s...
A Web App for Exploring Foreign‑Born Population Trends
I just created a web app for exploring trends in the foreign-born population...
Upcoming O’Reilly Workshop: Building Data Apps with Streamlit and Copilot
On April 14, I’ll be teaching a new 4‑hour live workshop for O’Reilly:...
<code>acs-nativity</code>: A Python Package for Analyzing Changes in the Foreign-Born Population
President Trump has made reducing illegal immigration and increasing deportations central goals of...
Upcoming Workshop: Data Analysis in R with the Tidyverse
Next week I’m teaching a three‑session, hands‑on introduction to data analysis in R...
New GeoPandas Tutorial Published on RealPython
I just published a new tutorial on RealPython: GeoPandas Basics: Maps, Projections and...
When One Graph Isn’t Enough: Upcoming Streamlit Workshop
Have you ever worked with a dataset so rich, so multidimensional, that no...
Ari Lamstein
I build open source tools for exploring public data — and teach others to do the same. I teach data app development for O’Reilly and have written tutorials for RealPython.