pythonpolarsdataframestreamingafter-work
Polars 2.0 RC after work: streaming collect is the new default
Polars Python 2.0.0-rc.1 (2 Sep 2026) makes LazyFrame.collect default to the streaming engine (~5x faster, less memory per official). join/group_by no longer guarantee row order — use maintain_order. After-work RC checklist. Not investment advice.