CSV

Work with CSV files — parsing, conversion, validation, and data interchange.

Apr 17, 2026·9 min read

What is CSV? A Developer's Guide to Comma-Separated Values

CSV looks simple until you hit a field with a comma inside it. This guide covers RFC 4180, quoting rules, dialect variations, parsing in Python and JavaScript, and the gotchas that trip up everyone.

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Apr 17, 2026·9 min read

CSV vs JSON — When to Use Each Format

CSV is a flat table. JSON is a tree. Most data format arguments ignore that distinction and end up in the wrong place. Here's a clear breakdown of where each format wins — and the JSON Lines hybrid that covers the middle ground.

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