from selenium import webdriver

from selenium.webdriver.common.action_chains import ActionChains as AC

from selenium.webdriver.support.wait import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

from selenium.webdriver.common.by import By

import time

from selenium.webdriver.support.ui import Select

driver = webdriver.Chrome()

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

time.sleep(3)

# 百度首页，设置链接元素定位

ele = driver.find_element(By.XPATH,"//div[@id='u1']/a[text()='设置']")

# 对设置链接进行鼠标悬浮操作

AC(driver).move_to_element(ele).perform()

# 设置下拉框中选择【高级搜索】,浮窗下拉列表可用click进行点击操作

WebDriverWait(driver,10).until(EC.visibility_of_element_located((By.XPATH,"//a[text()='高级搜索']")))

driver.find_element_by_xpath("//a[text()='高级搜索']").click()

# 等待高级设置搜索页面可见

WebDriverWait(driver,10).until(EC.visibility_of_element_located((By.XPATH,'//select[@name="ft"]')))

# 创建Select对象，参数为元素

ele = driver.find_element_by_xpath('//select[@name="ft"]')

s = Select(ele)

s.select_by_value('xls') #通过value

time.sleep(2)

s.select_by_index(1) #通过下标

time.sleep(2)

s.select_by_visible_text('RTF 文件 （.rtf)') #通过文本