本案例可以搭配后续的time.sleep（）函数进行程序暂停几秒钟来实现滑动验证码的手动确认（对滑动验证码暂时没有涉猎）

• selenium中爬取的源码为加载完js以后的网页内容，可以实现方便快捷的爬取当前页面信息

# coding=utf-8
from selenium import webdriver
import time
from selenium.webdriver.common.by import By
#实例化driver

driver = webdriver.Chrome()
driver.get("https://www.douban.com/")
driver.switch_to.frame(driver.find_element_by_xpath("//div[contains(@class,'login')]/iframe"))
driver.find_elements(By.CLASS_NAME ,'account-tab-account')[0].click()


driver.find_element_by_id("username").send_keys("[email protected]")

driver.find_element_by_id("password").send_keys("zhoudawei123")


driver.find_element_by_xpath("//a[contains(@class, 'btn-account')]").click()

 #获取cookie
# cookies = {i["name"]:i["value"] for i in driver.get_cookies()}
# print(cookies)

# 后面有滑动验证码，就不操作了。
time.sleep(8)
driver.quit()