from selenium import webdriver
from time import sleep
driver=webdriver.Firefox()
driver.get("http://www.baidu.com/")
driver.find_element_by_link_text("设置").click()
sleep(4)
driver.find_element_by_link_text("搜索设置").click()
sleep(2)
driver.find_element_by_link_text("保存设置").click()
sleep(3)
# 设置弹窗可进行操作driver.switch_to.alert()这个方法不兼容
alert=driver.switch_to_alert()
# 设置可点击
alert.accept()
sleep(3)
driver.quit()