#CrowTaobaoPrice.py
importrequestsimportredef getHTMLText(url):#获得网页信息
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36'}#使用浏览器header
try:
coo= 't=85db5e7cb0133f23f29f98c7d6955615; cna=3uklFEhvXUoCAd9H6ovaVLTG; isg=BM3NGT0Oqmp6Mg4qfcGPnvDY3-pNqzF2joji8w9SGWTYBu241_taTS6UdFrF3Rk0; miid=983575671563913813; thw=cn; um=535523100CBE37C36EEFF761CFAC96BC4CD04CD48E6631C3112393F438E181DF6B34171FDA66B2C2CD43AD3E795C914C34A100CE538767508DAD6914FD9E61CE; _cc_=W5iHLLyFfA%3D%3D; tg=0; enc=oRI1V9aX5p%2BnPbULesXvnR%2BUwIh9CHIuErw0qljnmbKe0Ecu1Gxwa4C4%2FzONeGVH9StU4Isw64KTx9EHQEhI2g%3D%3D; hng=CN%7Czh-CN%7CCNY%7C156; mt=ci=0_0; hibext_instdsigdipv2=1; JSESSIONID=EC33B48CDDBA7F11577AA9FEB44F0DF3'cookies= {}#上面的，登录淘宝后用开发者工具获取
for line in coo.split(';'): #浏览器伪装
name, value = line.strip().split('=', 1)
cookies[name]=value
r= requests.get(url,cookies=cookies,headers=headers,timeout=30)
r.raise_for_status()
r.encoding=r.apparent_encodingreturnr.textexcept:return ""
def parsePage(ilt, html):#对所得页面进行解析
try:
plt= re.findall(r'\"view_price\"\:\"[\d\.]*\"',html)
tlt= re.findall(r'\"raw_title\"\:\".*?\"',html)#.*?-最小匹配/匹配的内容是商品本身的名字
for i inrange(len(plt)):
price= eval(plt[i].split(':')[1])#通过split方法分割：后面的部分只取价格
title = eval(tlt[i].split(':')[1])#eval去掉双引号
ilt.append([price , title])except:print("")def printGoodsList(ilt):#将淘宝得商品信息输出到屏幕上
tplt = "{:4}\t{:8}\t{:16}"#规定输出格式
print(tplt.format("序号", "价格", "商品名称"))
count=0for g inilt:
count= count + 1
print(tplt.format(count, g[0], g[1]))defmain():
goods= '书包'depth= 3 #要爬取几页
start_url = '/search?q=' +goods
infoList=[]for i inrange(depth):try:
url= start_url + '&s=' + str(44*i)
html=getHTMLText(url)
parsePage(infoList, html)except:continueprintGoodsList(infoList)
main()
