Python Polars: The Definitive Guide

About the Authors

Jeroen Janssens is a senior developer relations engineer at Posit, PBC. His expertise lies in visualizing data, implementing machine learning models, and building solutions using Python, R, JavaScript, and Bash. He’s passionate about open source and sharing knowledge. Previously, Jeroen was at Xomnia, where he first learned about Polars. He is the author of Data Science at the Command Line (O’Reilly, 2021). Jeroen holds a PhD in machine learning from Tilburg University and an MSc in artificial intelligence from Maastricht University. He lives with his wife and two kids in Rotterdam, the Netherlands. Learn more on his website.

Thijs Nieuwdorp is the lead data scientist at Xomnia in Amsterdam. His interest in the interaction between human and computer led him to an education in artificial intelligence at the Radboud University, after which he dove straight into the field of data science. At Xomnia he witnessed the birth of Polars as Ritchie Vink started working on it during his employment there and has been using it in his projects ever since. He enjoys figuring out complex data problems, optimizing existing solutions, and putting them to good use by implementing them into business processes. Outside work, Thijs enjoys exploring our world through hiking and traveling and exploring other worlds through books, games, and movies. He lives in Amsterdam with his partner, Paula. Learn more on his website.