python抓取小说

刚学，使用python3，安装了BeautifulSoup，一个Python library，解析html
路径：http://www.crummy.com/software/BeautifulSoup/

from html.parser import HTMLParser
from bs4 import BeautifulSoup as bs
import urllib.request
import re

def parsechapter(url, out):
    data = urllib.request.urlopen(url)
    dataDecode = data.read().decode('utf-8')
    data.close()
    soup = bs(dataDecode)
    for content in soup.findAll(id="chapterContent"):
        for nc in content.findAll("p"):
            print(nc.span.previousSibling, file=out)
try
    a_file = open("test.txt", mode="a", encoding="utf-8")    
    showchapter_url = 'http://book.zongheng.com/showchapter/189169.html'
    chapterData = urllib.request.urlopen(showchapter_url)
    chapterDataDecode = chapterData.read().decode('utf-8')
    chapterData.close()

    chapterDataSoup = bs(chapterDataDecode)
    for chapters in chapterDataSoup.findAll("div", attrs={'class':"booklist"}):
        for chapter in chapters.findAll("a"):
            print(chapter.get_text(), file=a_file)
            parsechapter(chapter['href'], a_file)
except IOError:
    print('file error!')
finally:
    if 'a_file' in locals():
        a_file.close()