Change language on Firefox with Selenium Python

To change the language for Firefox Browser exectued by Selenium do as follows:

English:

from selenium import webdriverprofile = webdriver.FirefoxProfile()profile.set_preference('intl.accept_languages', 'en-US, en')driver = webdriver.Firefox(firefox_profile=profile)

German:

from selenium import webdriverprofile = webdriver.FirefoxProfile()profile.set_preference('intl.accept_languages', 'de-DE, de')driver = webdriver.Firefox(firefox_profile=profile)

There is no need to import FirefoxProfile, because this method is linked to webdriver.

Here you'll find a full list of all country/language codes: https://de.wikipedia.org/wiki/Liste_der_ISO-639-1-Codes

So I figured out the answer:

def get_webdriver(attempts=3, timeout=60, locale='en-us'):  firefox_profile = webdriver.FirefoxProfile()  firefox_profile.set_preference("intl.accept_languages", locale)  firefox_profile.update_preferences()  desired_capabilities = getattr(      DesiredCapabilities, "FIREFOX").copy()  hub_url = urljoin('http://hub:4444', '/wd/hub')  driver = webdriver.Remote(    command_executor=hub_url, desired_capabilities=desired_capabilities,    browser_profile=firefox_profile)  return driver

So, whenever you call this function just be sure to pass the param of locale to whatever language you want.

Eg, for German:

get_webdriver(locale='de') 

Enjoy!

I do not know much about Selenium, but from my research it looks like you may be using the wrong language keyword. From this link

https://groups.google.com/forum/#!topic/nightwatchjs/qwtLPIAJa_c

it looks like it should be QASpanish instead of es-es. Have you checked to make sure you are using the correct keyword?