Our open source scientific software projects are changing the world. We support projects like Pandas, Julia, & NumPy + organize @PyData!
- [Project Update] @Project_Pythia Cook-off 2026 Recap Project Pythiaโs annual Cookbook hackathon wrapped up June 15โ18 at NCARโs Mesa Lab in Boulder, CO. Participants spent the week building and expanding crowd-sourced geoscientific Python Cookbooks. Among the outcomes: the
- [Project Update] @Blosc2 Python-Blosc2 4.9.1 A hotfix for the Arrow interop work in 4.9.0. Dictionary-column Arrow export via CTable.iter_arrow_batches() was recomputing live row positions on every batch โ now computed once per export call, yielding 6โ14x faster export on 1M-row
- [Project Update ] @OptunaAutoML v5 release candidate coming in August Optuna v4.9 is the last in the v4 series. The team is preparing a v5 release candidate for early August, which will include a new method for calculating hyperparameter importance for conditional parameters โ
- "We as scientists were never really there to just write code. We were there to solve problems. The code's always been a tax." Andy Terrel โ NumFOCUS co-founder and NVIDIA engineer โ thinks AI coding tools are finally lowering the overhead cost that's always stood between a

