How do I get the user agent with Flask?

Question

I\'m trying to get access to the user agent with Flask, but I either can\'t find the documentation on it, or it doesn\'t tell me.

Answer 1

UA usually does not contain language. If you want to get the language set in browser, you may use

request.accept_languages

It'll give you list of languages. E.g.

LanguageAccept([('en-US', 1), ('en', 0.5)])

To access the first value, you may use

request.accept_languages[0][0]

which will result in string

'en-US'

Detailed information about 'accept_language" header: https://www.w3.org/International/questions/qa-lang-priorities