1 import re
2 import requests
3
4 def getHTMLText(url):
5 try:
6 r = requests.get(url, timeout = 30)
7 r.raise_for_status()
8 r.encoding = r.apparent_encoding
9 return r.text
10 except:
11 return ""
12
13
14 def parsePage(ilt, html):
15 try:
16 plt = re.findall(r'\"view_price\"\:\"[\d\.]*\"', html)
17 tlt = re.findall(r'\"raw_title\"\:\".*?\"', html)
18 for i in range(len(plt)):
19 price = eval(plt[i].split(":")[1]) #eval就是将字符串string对象转化为有效的表达式参与求值运算返回计算结果
20 title = eval(tlt[i].split(":")[1])
21 ilt.append([price, title])
22 except:
23 print("")
24
25 def printGoodsList(ilt):
26 tplt = "{:4}\t{:8}\t{:16}" #规定输出格式
27 print(tplt.format("序号", "价格", "商品名称"))
28 count = 0
29 for g in ilt:
30 count = count + 1
31 print(tplt.format(count, g[0], g[1]))
32 print("")
33
34 def main():
35 goods = '书包'
36 depth = 2
37 start_url = 'https://s.taobao.com/search?q=' + goods
38 infoList = []
39 for i in range(depth):
40 try:
41 url = start_url + '&s=' + str(44*i)
42 html = getHTMLText(url)
43 parsePage(infoList,html)
44 except:
45 continue
46 printGoodsList(infoList)
47
48
49 main()
