谁帮着调试一下这python代码。把这个效果给弄出来？给高分
from nntplib import NNTPfrom time import strftime, time, localtimefrom email import message_from_stringfrom urllib import urlopenimport textwrapimport reday = 24*60*60 #一天的秒数def wrap(string, max = 70): """将字符串调整为最大行宽 """ return '\n'.join(textwrap.wrap(string))+'\n'class NewsAgent: """可以从新闻来源获取新闻项目并且发布到新闻目标的对像""" def __init__(self): self.sources = [] self.destinations = [] def addSource(self, source): self.sources.append(source) def addDestination(self, dest): self.destination.append(dest) def dirtribute(self): """ 从所有来源获取所有新闻项目并且发布到所有目标 """ items = [] for source in self.sources: items.extend(source.getItems()) for dest in self.destination: dest.receiveItems(items)class NewsItem: """ 包括标题和主体文本的简单闻新项目 """ def __init__(self,title,body): self.title = title self.body = bodyclass NNTPSource: """ 从NNTP组中获取新闻项目的新闻来源 """ def __init__(self, servername, group,window): self.servername = servername self.group = group self.window = window def getItems(self): start = localtime(time() - self.window*day) date = strftime('%y%m%d',start) hour = strftime('%H%M%S',start) server = NNTP(self.servername) ids = server.newnews(self.group, date, hour)[1] for id in ids: lines = server.article(id)[3] message = message_from_string('\n'.join(lines)) title = message['subject'] body = message.get_paylaod() if message.is_multipart(): body = body[0] yield NewsItem(title, body) server.quit()class SimpleWebSource: """ 使用正则表达式从网页中提取新闻项目的新闻来源 """ def __init__(self, url, titlePattern, bodyPattern): self.url = url self.titlePattern = re.compile(titlePattern) self.bodyPattern = re.compile(bodyPattern) def getItems(self): text = urlopen(self.url).read() titles = self.titlePattern.findall(text) bodies = self.bodyPattern.findall(text) for title, body in zip(titles, bodies): yield NewsItem(title, wrap(body))class PlainDestination: """ 将所有新闻项目格式化为纯文本的新闻目标类. """ def receiveItems(self, items): for item in items: print item.title print '-'*len(item.title) print item.bodyclass HTMLDestination: """ 将所有新闻格式化为html的目标类 """ def __init__(self, filename): self.filename = filename def receiveItems(self, items): out = open(self.filename, 'w') print >> out, """ <html> <head> <title>Today's News</title> </head> <body> <h1>Today's News</h1> """ print >>out, '<ul>' id = 0 for item in items: id += 1 print >> out, '<li><a href="#%i">%s</a></li>' % (id, item.title) print >> out, '</ul>' id = 0 for item in items: id += 1 print >> out, '<h2><a name="%i">%s</a></h2>' % (id, item.title) print >> out, '<pre>%s</pre>' % item.body print >> out, """ </body> </html> """ def runDefaultSetup(): """ 来源和目标的默认设置,可以自已修改. """ agent = NewsAgent() #从BBS新闻站获取新闻的SimpleWebSource: bbc_url = 'http://news.bbc.co.uk/text_only.stm' bbc_title = r'(?s)</a>\s*<br />\s*<b>\s*(.*?)\s*</b>' bbc_body = r'(?s)</a>\s*<br />\s*(.*?)\s*<' bbc = SimpleWebSource(bbc_url, bbc_title, bbc_body) agent.addSource(bbc) #从comp.lang.python.annouce获取新闻的NNTPSource: clpa_server = 'news.foo.bar' # clpa_group = 'comp.lang.python.announce' clpa_window = 1 clpa = NNTPSource(clpa_server, clpa_group, clpa_window) agent.addSource(clpa) #增加纯文本目标和HTML目标： agent.addDestination(PlainDestination()) agent.addDestination(HTMLDestination('news.html')) #发布新闻项目 agent.distribute() if __name__ == '__main__': runDefaultSetup()