Multilingual flask application

I believe that Flask-Babel is what you are looking for.

You can achieve this by creating a decorator that decides which route to use.

def lang_route(en, fr, *args, **kwargs):
    # Find out the user's language
    lang = "en"
    if lang == "en":
        return app.route(en, *args, **kwargs)
    if lang == "fr":
        return app.route(fr, *args, **kwargs)


@lang_route(en="/staff", fr="/equipe")
def staff():
    return "staff"