Select

from selenium.webdriver.support.select import Select

Select(driver.find_element_by_id('el')).select_by_visible_text('xx')
Select(driver.find_element_by_id('el')).select_by_index('xx')
Select(driver.find_element_by_id('el')).select_by_value('xx')

只能用于选择框为select类型的，其余的，先确定下拉框元素，再在下面找选项

el = driver.find_element_by_id('1')
el.find_element_by_id('1-1').click()