Quick example of language detection with fasttext small model (less than 1MB model)

fasttext_langdetect_example.py

# Public Domain CC0 license. https://creativecommons.org/publicdomain/zero/1.0/

# Prepare with: pip install fasttext
# Tested with Python 3.9

import urllib.request
import fasttext

# Download small model (917KB)
# Other options: https://fasttext.cc/docs/en/language-identification.html
urllib.request.urlretrieve('https://dl.fbaipublicfiles.com/fasttext/supervised-models/lid.176.ftz', 'model.ft')

# Predict language of "hello world"
m = fasttext.load_model('model.ft')
m.predict('hello world')
# Returns (('__label__en',), array([0.17635809]))