data-languages 1.1.0

File extensions for data languages.

> data-languages

File extensions for data languages.

It's just a JSON file, so you can use it in any environment. Sourced from GitHub's Linguist project (defines all 145 data languages known to GitHub). Data is updated via script and released via new package version.

Installation

pip install data-languages

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Usage

import data_languages

json_lang_data = data_languages['JSON']

print(json_lang_data['extensions']) # => ['.4DForm', '.4DProject', '.avsc', ...]

Note: Most type checkers will falsely warn data_languages is not subscriptable because they are incapable of analyzing runtime behavior (where the module is replaced w/ a dictionary for cleaner, direct access). You can safely suppress such warnings using # type: ignore.

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Examples

Get language(s) from an extension:

def get_lang(file_ext):
    lang_matches = [
        lang for lang, data in data_languages.items()
            if file_ext in data['extensions']
    ]
    return lang_matches[0] if len(lang_matches) == 1 else lang_matches

print(get_lang('.ical')) # => iCalendar

Get language(s) from a file path:

def get_lang_from_path(filepath):
    from pathlib import Path
    file_ext = Path(filepath).suffix
    lang_matches = [
        lang for lang, data in data_languages.items()
            if file_ext in data['extensions']
    ]
    return lang_matches[0] if len(matches) == 1 else lang_matches

print(get_lang_from_path('steam.vdf')) # => Valve Data Format
print(get_lang_from_path('Sublime.sublime-snippet')) # => XML
print(get_lang_from_path('README.md')) # => [] (use prose-languages pkg)

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MIT License

Copyright © 2026 Adam Lui

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Related

</> markup-languages - File extensions for markup languages.
🇨🇳 non-latin-locales - ISO 639-1 (2-letter) codes for non-Latin locales.
#! programming-languages - File extensions for programming languages.

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