爬虫第一天（3）

def search(key):    base_url = 'http://www.baidu.com/s?'    qs = {        'wd': key,    } #设置关键字    qs = urllib.urlencode(qs)  # urlencode()可将字典编码    fullurl = base_url + qs    request = urllib2.Request(fullurl)  # 构造的request对象，构造时可传入url,data等参数    response = urllib2.urlopen(request)  # 将request请求传入urlopen方法中    return response.read()if __name__ == '__main__':  # 模拟程序入口，测试代码    key = raw_input('请输入查询关键字：')    result = search(key)    print result