爬取淘宝商品

1：淘宝搜索地址：https://s.taobao.com/search?q=关键词

   例：假如搜索书包，那么搜索地址便为 https://s.taobao.com/search?q=书包

2：翻页处理

可以发现淘宝每页44个商品，第i页url为 https://s.taobao.com/search?q=关键词&s=(i-1)*44

3：

代码：

import requests
import re
def getHTMLText(url):
	try:
		r = requests.get(url)
		r.raise_for_status()
		r.encoding = r.apparent_encoding
		#print(r.text)
		return r.text;
	except:
		print("getHTMLText Error")
		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 = tlt[i].split(':')[1]
			ilt.append([price, title])
	except:
		print("parsePage Error")
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 += 1
		print(tplt.format(count, g[0], g[1]))
def main():
	goods = 'iphone8'
	start_url = 'https://s.taobao.com/search?q=' + goods
	depth = 2
	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()

运行截图：