python编程获取续蜀山剑侠传：从目录名称、网址到内容

# -*- coding:UTF-8 -*-
import urllib.request, sys
import re

#--------------------------
def openUrl(url):
   try:
      page = urllib.request.urlopen(url, data=None, timeout=5)
   except urllib.error.HTTPError as e:
     print(e.code)
     print(e.reason)
     return ''
   except urllib.error.URLError as e:
     print(e.reason)
     return ''
   else:    
      html = page.read().decode('utf-8')
     return html

#--------------------------
def getCon(html, tag):
   i = html.find(tag)
   if i == -1:
      print ('没有找到' + tag)
     return ''
   else:
      con = html[i+len(tag):]
     #print ("前30个字符：" + con[:30])

      tag = 'ul'
     tag_pat = r'(?<=<'+ tag + '>).*?(?=</' + tag + '>)'  
     tag_ex = re.compile(tag_pat, re.M|re.S) 
      con = re.findall(tag_ex, con)
      #con = html.split('正文')
     #print (con[0])
     return con[0]

#--------------------------
def printList(list, host):
   #获取text
   res = r'(.*?)'
   t = re.findall(res, list, re.S|re.M)

   #获取href
   res_url = r"(?<=href=\").+?(?=\")|(?<=href=\').+?(?=\')"
   h = re.findall(res_url, list, re.I|re.S|re.M)
   
   for i in range(len(t)):
     print (str(i+1) + '\t' + t[i] + '\t' + host + h[i])

#--------------------------
def showCon(url):
   print (url)
   html = openUrl(url)
   if len(html) <= 0:
      print ('……未能打开-_-!')
     return

   #print (html)
   #html = html.replace('\u3000', '　')
   html = html.replace('', '\n')
   
  #取回目
   res = r'(.*?)
'
   t = re.findall(res, html, re.I|re.S|re.M)
   print (t[0])

   #获取内容
   res = r'(.*?)
'
   c = re.findall(res, html, re.I|re.S|re.M)
   #t = c[0].replace('\u3000','　')
   #t = t.replace('','\n')
   print (c[0])
  
#--------------------------
def showList(list, host):
   #获取text
   res = r'(.*?)'
   t = re.findall(res, list, re.S|re.M)

   #获取href
   res_url = r"(?<=href=\").+?(?=\")|(?<=href=\').+?(?=\')"
   h = re.findall(res_url, list, re.I|re.S|re.M)
 
   showCon(host + h[0])  
   #for i in range(len(t)):
   # showCon (host + h[i])

#--------------------------
def main():
   url = 'http://www.mengxi.net/book/263745/index.html'
   i = url.index('/', 7)
   host = url[0 : i]
   #print ('打开' + url)
   html = openUrl(url)
   if len(html) > 0:
      tag = '正文'
      list = getCon(html, tag)
     showList(list, host)

main()