柳树舒展开了黄绿嫩叶的枝条,在微微的春风中轻柔地拂动,就像一群群身着绿装的仙女在翩翩起舞。夹在柳树中间的桃树也开出了鲜艳的花朵,绿的柳,红的花,真是美极了!
python爬虫学习之定向爬取淘宝商品价格,供大家参考,具体内容如下
import requests import re def getHTMLText(url): try: r = requests.get(url, timeout=30) r.raise_for_status() #如果发送了一个失败请求(非200响应),#我们可以通过 Response.raise_for_status() 来抛出异常: r.encoding= r.apparent_encoding return r.text except: return "" def parsePage(ilt,html): try: plt = re.findall(r'\"view_price\"\:\"[\d\.]*?\"',html) #正则表达式来匹配 "view_price":"\d\."类型的字符串 tlt = re.findall(r'\"raw_title\"\:\".*?\"',html) #正则表达式来匹配 "raw_title":".*?"类型的字符串,.*?是任意字符的最小匹配 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 PrintGoodsList(ilt): tplt = "{:4}\t{:8}\t{:16}" print (tplt.format("序号","价格","商品名称")) 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 PrintGoodsList(infoList) main()
本文python定向爬取淘宝商品价格到此结束。如果我们有着快乐的思想,我们就会快乐;如果我们有着凄惨的思想,我们就会凄惨。小编再次感谢大家对我们的支持!