import requests,urllib.request

 from bs4 import BeautifulSoup

 url = 'http://photo.bitauto.com/'

 header = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 UBrowser/5.7.16173.12 Safari/537.36'}

 source_code = requests.get(url,headers = header)

 # print (source_code)

 plain_text = source_code.text

 # print (plain_text)

 Soup = BeautifulSoup(plain_text)

 # print (Soup)

 download_link = []

 folder_path = 'F:/pictures_py/cars/'

 for pic_tag in Soup.find_all('img'):

     pic_link = pic_tag.get('src')

     download_link.append(pic_link)

 # print (download_link)

 for item in download_link:

     urllib.request.urlretrieve(item,folder_path + item[-10:])

     print ('done')