# !/user/bin/env python
# -*- coding: utf-8 -*-
import urllib
import urllib2
import re
import thread
import time
class QSBK:
def __init__(self):
self.pageIndex=1
self.user_agent='Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'
self.headers={ 'User-Agent' : self.user_agent }
self.stories=[]
self.enable = False
def getPage(self,pageIndex):
try:
url = 'http://www.qiushibaike.com/hot/page/' + str(pageIndex)
request = urllib2.Request(url,headers = self.headers)
response = urllib2.urlopen(request)
pageCode = response.read().decode('utf-8')
return pageCode
except urllib2.URLError, e:
if hasattr(e,"code"):
print e.code
if hasattr(e,"reason"):
print u"连接糗事百科失败,错误原因",e.reason
return None
def getPageItems(self,pageIndex):
pageCode = self.getPage(pageIndex)
if not pageCode:
print "页面加载失败"
return None
pattern =re.compile('.*?(.*?).*?(.*?).*?
(.*?)
(.*?)'
,re.S)
items=re.findall(pattern
,pageCode)
pageStories=[]
for item
in items:
haveImg = re.search(
"img",item[
3])
if not haveImg:
replaceBR=re.compile(
'
')
text = re.sub(replaceBR
,"\n",item[
1])
pageStories.append([item[
0].strip()
,text.strip()
,item[
2].strip()
,item[
4].strip()])
return pageStories
def loadPage(
self):
#如果当前未看的页数少于2页,则加载新一页
if self.enable ==
True:
if len(
self.stories) <
2:
#获取新一页
pageStories =
self.getPageItems(
self.pageIndex)
#将该页的段子存放到全局list中
if pageStories:
self.stories.append(pageStories)
self.pageIndex +=
1
def getOneStory(
self,pageStories
,page):
#遍历一页的段子
for story
in pageStories:
#等待用户输入
input =
raw_input()
#每当输入回车一次,判断一下是否要加载新页面
self.loadPage()
#如果输入Q则程序结束
if input ==
"Q":
self.enable =
False
return
print u"第%d页\t发布人:%s\t发布时间:%s\t赞:%s\n%s" %(page
,story[
0]
,story[
2]
,story[
3]
,story[
1])
#开始方法
def start(
self):
print u"正在读取糗事百科,按回车查看新段子,Q退出"
#使变量为True,程序可以正常运行
self.enable =
True
#先加载一页内容
self.loadPage()
#局部变量,控制当前读到了第几页
nowPage =
0
while self.enable:
if len(
self.stories)>
0:
#从全局list中获取一页的段子
pageStories =
self.stories[
0]
#当前读到的页数加一
nowPage +=
1
#将全局list中第一个元素删除,因为已经取出
del self.stories[
0]
#输出该页的段子
self.getOneStory(pageStories
,nowPage)
spider = QSBK()
spider.start()
self.stories里始终保存了两个页面的段子,一单读取完一个页面的段子就加载新页面