How to ensure user submit only english text

Question

I am building a project involving natural language processing, since the nlp module currently only deal with english text, so I have to make sure the user submitted content (not long, only several words) is in english. Are there established ways to achieve this? Python or Javascript way preferred.

Answer 1

If the content is long enough I would suggest some frequency analysis on the letters.

But for a few words I think your best bet is to compare them to an English dictionary and accept the input if half of them match.

Answer 2

Check the Language Recognition Chart