淘宝商品比价定向爬虫

目标：获取淘宝搜索页面信息，提取其中的商品名称和价格

程序的结构设计：

1. 提交商品搜索请求，循环获取页面
2. 对每个页面，提取商品名称和价格信息
3. 将信息输出到屏幕上

import requestsimport redef getHTMLText(url):     try:          r = requests.get(url)          r.raise_for_status()          r.encoding = r.apparent_encoding          return r.text     except:          return ""def parsePage(ilt,html):     try:          plt = re.findall(r'\"view_price\"\:\"[\d\.]*\"',html)          tlt = re.findall(r'\"raw_title\"\:\".*?\"',html)          for i in range(len(plt)):               price = eval(plt[i].split(':')[1])               title = eval(tlt[i].split(':')[1])               ilt.append([price,title])     except:          print("")def printGoodList(ilt):     tplt = "{:4}\t{:8}\t{:16}"     print(tplt.format("序号","价格","商品名"))     count = 0     for g in ilt:          count = count +1          print(tplt.format(count,g[0],g[1]))def main():     goods = '书包'     depth = 2     start_url = 'https://s.taobao.com/search?q=' + goods     infoList = []     for i in range(depth):          try:               url = start_url + '&s=' + str(44*i)               html = getHTMLText(url)               parsePage(infoList,html)          except:               continue     printGoodList(infoList)main()