https://dailypypy.org/tags/etl/ Recent content in ETL on 每日拍拍 Hugo -- gohugo.io zh-tw © 2026 每日拍拍 Thu, 25 Jun 2026 12:17:00 +0800 155076163427069952 154825760438254592 https://dailypypy.org/learn/python-pyarrow/ Thu, 25 Jun 2026 12:17:00 +0800 https://dailypypy.org/learn/python-pyarrow/ <!--- 1440x768 prompt: masterpiece, best quality, highres, clean anime illustration, japanese anime style, soft shading, flat color design, 1girl, black hair, green eyes, white off-shoulder shirt, black short skirt, side profile, holding translucent data cards, curious expression, looking at viewer, soft seafoam background, subtle floating column blocks and tiny parquet file shapes without text, neat composition, detailed eyes, cute and smart vibe, minimal background, polished illustration, no text negative prompt: worst quality, bad eye, bad hand, extra limbs, manga, multiple views, monochrome, text, signature dedup note: Free-pick topic `python-pyarrow` is distinct from ../python-duckdb/, ../python-polars/, ../python-csv/, and ../streamlit-duckdb-dashboard/. Those posts cover SQL analytics over local files, DataFrame expression workflows, standard-library CSV streaming, and UI dashboards. This article focuses on PyArrow itself: Arrow Array/Table memory layout, explicit schema contracts, Parquet metadata, partitioned datasets, row group filtering, and clean exchange between pandas, Polars, DuckDB, and batch pipelines. ---> <p> <figure> <img class="my-0 rounded-md" loading="lazy" alt="featured" src="./featured.png" /> </figure> </p>