test.py

from selenium import webdriver


def select_from_chosen(driver, id, value):
    chosen = driver.find_element_by_id(id + '_chzn')
    results = chosen.find_elements_by_css_selector(".chzn-results li")

    found = False
    for result in results:
        if result.text == value:
            found = True
            break

    if found:
        chosen.find_element_by_css_selector("a").click()
        result.click()
    return found


def select_from_multi_chosen(driver, id, values):
    chosen = driver.find_element_by_id(id + '_chzn')
    results = chosen.find_elements_by_css_selector(".chzn-results li")

    for value in values:
        found = False
        for result in results:
            if result.text == value:
                found = True
                break
        if found:
            chosen.find_element_by_css_selector("input").click()
            result.click()



# Create a new instance of the Firefox driver
driver = webdriver.Firefox()

# go to the google home page
driver.get("http://harvesthq.github.com/chosen/")

#on the demo page, ids are always changing
chosen_selects = driver.find_elements_by_css_selector(".chzn-select")

select = chosen_selects[0]
select_id = select.get_attribute("id")
select_from_chosen(driver, select_id, "France")


select = chosen_selects[1]
select_id = select.get_attribute("id")
select_from_multi_chosen(driver, select_id, ["India", "France"])



driver.quit()