Ian Ozsvald

Pandas 2 brings new Arrow data types, faster calculations and better scalability and even GPU acceleration in Pandas with CuDF is possible. Dask scales Pandas across cores and recently released a new “expressions” optimization. Polars is a new competitor to Pandas designed around Arrow with native multicore support. Which should you choose for modern research workflows? We’ll solve a “just about fits in ram” data task using the 3 solutions, talking about the pros and cons so you can make the best choice for your research workflow. You’ll leave with a clear idea of whether Pandas 2, Dask or Polars is the tool to invest in and how Polars fits into the existing numpy-focused ecosystem.

Do you still need 5x working RAM for Pandas operations (probably not!)? Can Pandas string operations actually be fast (sure)? Since Polars uses Arrow data structures, can we easily use tools like Scikit-learn and matplotlib (yes-maybe)? What limits do we still face? Could you switch to experimenting with Polars?

Ian is a Chief Data Scientist, has co-founded and built the annual PyDataLondon conference raising $100k+ annually for the open source movement along with the associated 13,000+ member monthly meetup. Using data science he’s helped clients find $2M in recoverable fraud, created the core IP which opened funding rounds for automated recruitment start-ups and diagnosed how major media companies can better supply recommendations to viewers. He gives conference talks internationally often as keynote speaker and is the author of the bestselling O’Reilly book High Performance Python (2nd edition). He has over 25 years of experience as a senior data science leader, trainer and team coach. For fun, he’s walked by his high-energy Springer Spaniel, surfs the Cornish coast and drinks fine coffee.