python爬取淘宝商品销量信息

import requests
import bs4
import re
import json
 
def open(keywords, page):
   headers={"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36"}
 
   payload = {'q':keywords, 'sort':"sale-desc", 's':(page-1)*44}
   url = "https://s.taobao.com/search"
 
   res = requests.get(url, params = payload)
   return res
   
   
def get_item(res):
 
   g_page_config = re.search(r'g_page_config = (.*"请输入搜索关键词：")#可以为各种商品名称
   length = 10#淘宝商品页数
   total = 0
   
   for each in range(length):
      res = open(keywords, each+1)
      items = get_item(res)
      total += count_sales(items)#销售总量
   print(total)
 
 
if __name__ == "__main__":
   main()