---
id: weblate-language-data
version: "2026.10"
license: MIT
license_treatment: permissive
maintenance: active
---

# weblate-language-data — Language definitions for Weblate

License: permissive · Maintenance: active · Downloads: 118.4K/mo

## What it is and what it does

Weblate Language Data is a reference dataset of language definitions, plural rules, and locale mappings maintained by the Weblate localization platform. It bundles language codes, names, plural equations aligned with CLDR standards, locale aliases, and country-specific defaults into a Python package that can be imported directly or used as a Django application. The package also includes Gettext translations for language names themselves.

The data originates from multiple authoritative sources—CLDR, Gettext standards, and the translate-toolkit—and is manually curated to handle edge cases and legacy locale codes. It's designed primarily for localization tools and frameworks that need canonical, standards-aligned language metadata, though any Python project working with internationalization can import and use the definitions.

Use it for:

- Populate language selection dropdowns in a web application with canonical language names and codes.
- Resolve non-standard or legacy locale codes to their modern equivalents using the aliases dataset.
- Determine the correct plural form rules for a given language when generating or parsing Gettext catalogs.
- Map user-selected countries to their default language locales for initial UI language detection.
- Build a localization workflow tool that needs CLDR-compliant language and plural metadata.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides language definitions, plural rules, and locale mappings for internationalization and localization systems, including Gettext translations and CLDR-based data.

Yes. The package is actively maintained, has zero known vulnerabilities, carries a permissive MIT license, and installs with no dependencies. Install it if you're building or integrating with a localization system and need reliable, standards-aligned language definitions; skip it if your application has no internationalization requirements.

## Install

pip install weblate-language-data
uv add weblate-language-data
poetry add weblate-language-data

## Installing weblate-language-data

Before you install: Low friction install with no runtime dependencies. Actively maintained with a recent release and ongoing repository activity.

License in practice: MIT license permits use, modification, and distribution with minimal restrictions, making it suitable for both open-source and proprietary projects.

Quickstart:

pip install weblate-language-data

from weblate_language_data import languages
# Access language definitions and plural rules

Requires Python 3.11 or later.

Verify before relying:

- Whether the package exposes a public API beyond module imports, or if it's primarily data-driven.
- Whether CSV files are accessible programmatically or only as reference documentation.
- How to query or iterate over language definitions after import.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 118.4K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

language definitions i18n, locale data gettext, plural rules localization, weblate language data, cldr language mappings, internationalization language codes, l10n language database, i18n-l10n, language-data, cldr

[View on SkillFed](https://skillfed.io/packages/weblate-language-data) · [View on PyPI](https://pypi.org/project/weblate-language-data/)