python爬取淘宝商品销量信息

python爬取淘宝商品销量的程序，运行程序，输入想要爬取的商品关键词，在代码中的‘###'可以进一步约束商品的属性，比如某某作者的书籍，可以在###处输入作者名字，以及时期等等。最后可以得到所要商品的总销量

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 = (.*?);\n', res.text)
  page_config_json = json.loads(g_page_config.group(1))
  page_item = page_config_json['mods']['itemlist']['data']['auctions']

result = []#整理出我们关注的信息(ID,标题，链接，售价，销量和商家)
  for each in page_item:
     dict1 = dict.fromkeys(('id','title','link','price','sale','shoper'))
     dict1['id'] = each['nid']
     dict1['title'] = each['title']
     dict1['link'] = each['detail_url']
     dict1['price'] = each['view_price']
     dict1['sale'] = each['view_sales']
     dict1['shoper'] = each['nick']
     result.append(dict1)

return result

def count_sales(items):
  count = 0
  for each in items:
     if '###' in each['title']:#规定只取标题中‘###'的商品
        count += int(re.search(r'\d+',each['sale']).group())

return count

def main():

keywords = input("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()

来源：https://blog.csdn.net/qq_25774883/article/details/81292383