网易新网 spider

# -*- coding: utf-8 -*-
import os
import sys
import urllib.request
import requests
import re
from lxml import etree def StringListSave(save_path, filename, slist):
if not os.path.exists(save_path):
os.makedirs(save_path)
path = save_path+"/"+filename+".txt"
with open(path, "w+") as fp:
for s in slist:
fp.write("%s\t\t%s\n" % (s[0].encode("utf8"), s[1].encode("utf8"))) def Page_Info(myPage):
'''Regex'''
mypage_Info = re.findall(r'<div class="titleBar" id=".*?"><h2>(.*?)</h2><div class="more"><a href="(.*?)">.*?</a></div></div>', myPage, re.S)
return mypage_Info def New_Page_Info(new_page):
'''Regex(slowly) or Xpath(fast)'''
# new_page_Info = re.findall(r'<td class=".*?">.*?<a href="(.*?)\.html".*?>(.*?)</a></td>', new_page, re.S)
# # new_page_Info = re.findall(r'<td class=".*?">.*?<a href="(.*?)">(.*?)</a></td>', new_page, re.S) # bugs
# results = []
# for url, item in new_page_Info:
# results.append((item, url+".html"))
# return results
dom = etree.HTML(new_page)
new_items = dom.xpath('//tr/td/a/text()')
new_urls = dom.xpath('//tr/td/a/@href')
assert(len(new_items) == len(new_urls))
return zip(new_items, new_urls) def Spider(url):
i = 0
print ("downloading ", url)
myPage = requests.get(url).content.decode("gbk")
# myPage = urllib.request.urlopen(url).read().decode("gbk")
myPageResults = Page_Info(myPage)
save_path = u"网易新闻抓取"
filename = str(i)+"_"+u"新闻排行榜"
StringListSave(save_path, filename, myPageResults)
i += 1
for item, url in myPageResults:
print ("downloading ", url)
new_page = requests.get(url).content.decode("gbk")
# new_page = urllib.request.urlopen(url).read().decode("gbk")
newPageResults = New_Page_Info(new_page)
filename = str(i)+"_"+item
StringListSave(save_path, filename, newPageResults)
i += 1 if __name__ == '__main__':
print ("start")
start_url = "http://news.163.com/rank/"
Spider(start_url)
print ("end")

  网易新网  spider

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