Selenium更改Firefox浏览器语言python mac

Question

I've spent 3 hours trying to find a solution to this problem, and I'm so far from an answer I feel like I have to ask. (I've found similar posts - below is an explanation of why I'm asking despite finding these posts)

I'm writing a program that enters several search terms into google - and retrieves the ranking of my page. I want to know my ranking for several different country SERP's. I've gotten the issue with ip address solved. But now I see that google is factoring in the language of my browser when giving me a SERP. In order to get closer to the true rank of my page in a country ( I say closer because I've also seen that the SERP depends on search history) I have to use a web browser with a language native to the country I'm interested in.

Changing the language in firefox manually is difficult - as a matter of fact you have to install several different language version (I've also read about installing language packs - but unsure if this is relevant for firefox 12). I don't have a clue about how to get selenium to choose the right firefox version.

I'm having a hard time understanding what needs to be done: Do I have to specify which firefox installation / version selenium is suppose to use when launching web driver.firefox(). Or is it possible to determine the browser language by changing the firefox profile.

I've spent some time looking into the profile part - and found partial evidence (original post) although I can't find any reference to language in the profile files.

The answer in the same post seems to have solved the problem - but I don't know the language and I'm having trouble understanding what's actually being done.

I know there's an add-on to firefox for changing between the language versions (you have to first install the different language versions of firefox that you want) - Given that the settings option mentions changing "general.useragent.local preference" I'm thinking it's a profile setting that can be changed - but the add-on requires a re-start of the browser when you change the language - so..

I can't find anything about general.useragent.local in the profile settings.

Any one giving me a point in the right direction would be making my day!

EDIT: Forgot to mention - I only know python - so that's why I wrote python in the title

Answer 1

Ok, I have to agree that perhaps this isnt the best way to approach this problem but will answer what you need

from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary

binary = FirefoxBinary('path/to/binary')
profile = webdriver.FirefoxProfile()
profile.add_extension('path/to/xpi') #XPI needs to be on disk and not downloaded from AMO
profile.set_preference('general.useragent.local','<enter your value')

driver = webdriver.Firefox(firefox_binary=binary, firefox_profile=profile)
# Carry on with what you want

The pydocs are available here