python 文章中图片下载

from selenium.webdriver import Chrome
import requests
import time
web = Chrome()
web.get('https://www.jianshu.com/p/b4155eeabaa6')
img1 = web.find_element_by_xpath('//*[@id="__next"]/div[1]/div/div[1]/section[1]/article/div[3]/div[1]/div[2]/img').get_attribute('data-original-src')
time.sleep(1)
img1_addr = 'https:'+img1
with open("tupian1.jpg",mode='wb') as f:
    f.write(requests.get(img1_addr).content)
web.quit()