以登录京东上某款口罩购买为例：
from selenium import webdriver
import time
driver = webdriver.Firefox()
driver.get(‘https://item.jd.com/100011385146.html’)
driver.find_element_by_class_name(“link-login”).click()
driver.find_element_by_xpath(’/html/body/div[2]/div[2]/div[1]/div/div[3]/a’).click()
driver.find_element_by_id(‘loginname’).send_keys(‘username’) #输入京东账号
driver.find_element_by_id(‘nloginpwd’).send_keys(‘password’)#输入京东账号密码
driver.find_element_by_id(‘loginsubmit’).click()
driver.implicitly_wait(5) #设置5s延时用于手动完成拼图登录验证
for i in range(100):
driver.find_element_by_class_name(“btn-add”).click()
driver.quit()
print(time.ctime())