鼠标悬停

>>> from selenium.webdriver.common.action_chains import ActionChains
>>> setting = driver.find_element_by_xpath("//div[@id='u1']/a[7]")
>>> ActionChains(driver).move_to_element(setting).perform()
>>> driver.find_element_by_class_name("setpref")
<selenium.webdriver.remote.webelement.WebElement object at 0x7fd7070589d0>
>>> driver.find_element_by_class_name("setpref").click()

鼠标悬停

ActionChains(driver).move_to_element(element).perform()