how to set specific profile for gecko driver

Question

in this code, i think only --headless is working properly
i tried with -p or --profile "path to firefox profile", none of this is working

def initialize_web_driver():
    try:
        firefox_options = webdriver.FirefoxOptions()
        firefox_options.add_argument('--headless')
        firefox_options.add_argument("-p GPTT")
        firefox_options.set_preference("browser.shell.checkDefaultBrowser", False)              
        driver = webdriver.Firefox(options=firefox_options)
        driver.set_window_size(1920, 1080)
        return driver
    except Exception as e:
        print(f"Error initializing WebDriver: {str(e)}")
        return None

Answer 1

When you using firefox_options.add_argument, you must set profile path with new firefox_options.add_argument line, if you use profile path same line with -profile -P,etc. it will not working.

firefox_options = webdriver.FirefoxOptions()
firefox_options.add_argument('--headless')
firefox_options.add_argument("-profile")
        firefox_options.add_argument("C:\\Users\\User2\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\qgrlmh39.GPTT")     
driver = webdriver.Firefox(options=firefox_options)
driver.set_window_size(1920, 1080)