很久就想学python了，但一直找不到合适的项目来练习，python的语法很有意思，写起来很简洁，今天有空边找资料边写出来了这一个小项目。考虑到3.x的python库还不是很多，大部分资料也是python2.x的，所以我用的python2.7来进行
之前就听说python访问网络很easy，这次是真的体会到了。很简单几句话搞定，不像java那样，再简单的访问都要装饰几层才能使用。
这次是拿糗事百科的网站，从上面抓取新鲜事并整理打印出来
不想多说了，以下上代码：
import urllib2 import sgmllib class Entry: author='' content='' pic='' up = 0 down = 0 tag = '' comment = 0 def to_string(self): return '[Entry: author=%s content=%s pic=%s tag=%s up=%d down=%d comment=%d]'\ %(self.author,self.content,self.pic,self.tag,self.up,self.down,self.comment) class MyHTMLParser(sgmllib.SGMLParser): #所有用到的声明 #note all the datas datas = [] # all the entries entries = [] #the entry now entry = Entry() #last Unclosed tag div_tag_unclosed = '' def start_div(self,attrs): for name,value in attrs: if name =='class' and value == 'content': self.div_tag_unclosed = 'content' elif name=='class' and value == 'tags' : self.div_tag_unclosed = 'tags' elif name=='class' and value=='up': self.div_tag_unclosed = 'up' elif name=='class' and value == 'down': self.div_tag_unclosed = 'down' elif name=='class' and value=='comment': self.div_tag_unclosed = 'comment' elif name=='class' and value=='author': self.div_tag_unclosed = 'author' self.entry = Entry() elif name=='class' and value=='thumb': self.div_tag_unclosed = 'thumb' def end_div(self): if self.div_tag_unclosed == 'content' : self.div_tag_unclosed ='' self.entry.content = self.datas.pop().strip() def start_a(self,attrs):pass def start_img(self,attrs): if self.div_tag_unclosed == 'thumb': for name,value in attrs: if name=='src': self.div_tag_unclosed ='' self.entry.img = value.strip() def end_img(self):pass def end_a(self): if self.div_tag_unclosed == 'author': self.div_tag_unclosed ='' self.entry.author = self.datas.pop().strip() if self.div_tag_unclosed == 'tags': self.div_tag_unclosed ='' self.entry.tag = self.datas.pop().strip() elif self.div_tag_unclosed == 'up': self.div_tag_unclosed ='' self.entry.up = int(self.datas.pop().strip()) elif self.div_tag_unclosed == 'down': self.div_tag_unclosed ='' self.entry.down = int(self.datas.pop().strip()) elif self.div_tag_unclosed == 'comment': self.div_tag_unclosed ='' self.entry.comment = int(self.datas.pop().strip()) self.entries.append(self.entry) def handle_data(self, data): # print 'data',data self.datas.append(data) #request the url response = urllib2.urlopen('http://www.qiushibaike.com/8hr') all = response.read() #parse HTML parser = MyHTMLParser() parser.feed(all) #print all the entries for entry in parser.entries: print entry.to_string()
整个程序很简单，用到了urllib2来请求网络，sgmllib来解析Html，由于第一次写python程序，所以写的时候效率很低，尤其是一直想在if后面加上小括号=-=
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