《2018年5月29日》【连续231天】
标题:淘宝商品比价定向爬虫;
内容:
A.淘宝商品比价定向爬虫:
requests + re:
import requests
import re
def getHTMLText(url):
try:
r = requests.get(url, timeout = 30)
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 printGoodsList(ilt):
tplt = "{:4}\t{:6}\t{:20}"
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 = 3
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()
效果:

本文介绍了一个基于Python的淘宝商品比价爬虫项目,使用requests和正则表达式从淘宝网站抓取指定商品的价格及标题信息。该爬虫能够实现对多个页面的数据抓取,并将结果展示出来。
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