Python Selenium Firefox geckodriver. Detach browser from terminal

With Chrome (chromedriver) it's very simple:

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.add_experimental_option('detach', True)

With Firefox (geckodriver) no:

from selenium import webdriver
from selenium.webdriver.firefox.options import Options
options = Options()
options.add_experimental_option('detach', True)  # Returns syntax error

What is the equivalent syntax for leaving the Firefox browser open even when the script ends?

from Python Selenium Firefox geckodriver. Detach browser from terminal