ISO 639 Language Library

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library 2.6.3 ·python
verified May 24, 2026

iso639-lang is a fast, comprehensive Python library for working with ISO 639 language codes and information. It provides access to language data across ISO 639-1, -2, and -3 standards. The library is actively maintained with frequent updates, often tied to new releases of the ISO 639-3 tables by SIL, and is currently at version 2.6.3.

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