#code:utf-8

from selenium import webdriver

from selenium.webdriver.common.action_chains import ActionChains

from selenium.webdriver.support.select import Select

from time import sleep

driver=webdriver.Firefox()

driver.get("https://www.baidu.com")

#点击搜索设置

sz=driver.find_element_by_xpath('//*[@id="u1"]/a[8]')

ActionChains(driver).move_to_element(sz).perform()

driver.find_element_by_link_text("搜索设置").click()

sleep(3)

#select选择框操作

se=driver.find_element_by_id('nr') Select(se).select_by_value('50')

#保存设置

sleep(2)

driver.find_element_by_xpath('//*[@id="gxszButton"]/a[1]').click()

t=driver.switch_to_alert()

print(t.text)

#点击确定

t.accept()

driver.quit()