分享一个好玩的python爬虫代码

# -*- coding: utf-8 -*-
import urllib2
import re
class QSBK:
	def __init__(self):
		self.pageIndex = 1
		self.user_agent = 'Mozilla/5.0 (Windows NT 10.0; WOW64)'
		self.headers = {'User-Agent': self.user_agent}
		self.stories = []
		# 存放程序是否继续运行的变量
		self.enable = False
	# 传入某一页的索引获得页面代码
	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, "reason"):
				print u"连接糗事百科失败，错误原因", e.reason
				return None

	# 传入某一页代码，返回本页不带图片的段子列表
	def getPageItems(self, pageIndex):
		pageCode = self.getPage(pageIndex)
		if not pageCode:
			print "页面加载失败。。。"
			return None
		pattern = re.compile('
.*?
(.*?)
.*?"content">(.*?)
.*?number">(.*?)(.*?)')
			text = re.sub(replaceBR,"\n",item[1])
			pageStories.append([item[0].strip(),text.strip(),item[2].strip(),item[3].strip()])
		return pageStories

	# 加载并提取页面内容，加入到列表中
	def loadPage(self):
		if self.enable == True:
			if len(self.stories) < 2:
				pageStories = self.getPageItems(self.pageIndex)
				if pageStories:
					self.stories.append(pageStories)
					self.pageIndex += 1

    # 调用该方法，回车打印一个段子
	def getOneStory(self, pageStories, page):
		for story in pageStories:
			input = raw_input()
			self.loadPage()
			if input == "Q":
				self.enable = False
				return
			print u"第%d页\t发布人:%s\t赞:%s\t评论:%s\n%s" %(page,story[0],story[2],story[3],story[1])

	def start(self):
		print u"正在读取糗事百科,按回车查看新段子，Q退出"
		self.enable = True
		self.loadPage()
		nowPage = 0
		while self.enable:
			if len(self.stories) > 0:
				pageStories = self.stories[0]
				nowPage += 1
				del self.stories[0]
				self.getOneStory(pageStories, nowPage)

spider = QSBK()
spider.start()