Python 爬虫selenium爬煎蛋

初学爬虫入坑爬煎蛋的教程，无奈煎蛋有反爬虫机制获取不到真实图片地址，研究了两天，自己写了一个，代码很简单，便于理解。

import time,requests
from selenium import webdriver
from bs4 import BeautifulSoup
star = time.time()
browser = webdriver.Chrome()
n = 1
total = 0
for num in range(48,0,-1):
    browser.get('http://jandan.net/ooxx/page-'+str(num)+'#comments')
    data = browser.page_source
    soup = BeautifulSoup(data,'lxml')
    download_links = []
    folder_path = 'C:\\Users\\Administrator\\Desktop\\JD\\'
# print('===========第' + str(num) + '页===============')
    for pic_tag in soup.find_all('img'):
        pic_link = pic_tag.get('src')
        download_links.append(pic_link)
    for item in download_links:
        try:
            urllib.request.urlretrieve(item,folder_path + item[-10:])
                with open(folder_path + item[-10:],'wb',) as f:
                    f.write(requests.get(item).content)
            print('正在下载第{}图片'.format(n))
            total += 1
        except:
            print('第{}张图片下载出错，已跳过'.format(n))
            n += 1
browser.close()
end = time.time()
print('总共用时{}分'.format((end-star)/60))
print('成功下载{}张图片，失败{}张图片'.format(total,n-total))