Python根据url获取网页内容详解编程语言

    #! /usr/bin/python   
    # -*- coding:utf-8 -*-   
    '''''  
    Created on 2013-11-5  
      
    @author: Java  
    '''   
    import urllib2   
    import time   
    import socket   
    from sgmllib import SGMLParser   
       
    class WebUtil():   
        def __init__(self):   
            self.trytims = 3   
            pass   
       
    #读取Url 内容   
    #     timeout=10   
    #     socket.setdefaulttimeout(timeout)#这里对整个socket层设置超时时间。后续文件中如果再使用到socket，不必再设置   
    #     sleep_download_tine=10   
    #     time.sleep(sleep_download_tine)   
        def readUrl(self,url):   
            try:   
                request = urllib2.Request(url,headers = {'User-Agent':'Magic Browser'})   
                webpage = urllib2.urlopen(url)   
                content = webpage.read()   
                   
                return content   
                request.close()   
            except Exception,errmg:   
                print '读取失败：%s'%errmg   
                return None   
               
    if __name__=='__main__':   
        web = WebUtil()   
        content = web.readUrl('http://www.open-open.com')   
        print content