polars
K-Dense-AI/claude-scientific-skills
28,042Added Jun 5, 2026
polarsdataframeetldata-processingapache-arrowpandas-alternativepythonhigh-performance
Summary
Fast in-memory DataFrame library for datasets that fit in RAM. Use when pandas is too slow but data still fits in memory. Lazy evaluation, parallel execution, Apache Arrow backend. Best for 1-100GB datasets, ETL pipelines, faster pandas replacement. For larger-than-RAM data use dask or vaex.