python爬虫

#爬虫程序
import urllib2

def fetch(url):
    http_header = {'User-Agent': 'Chrome'}
    http_request = urllib2.Request(url, None, http_header)

    print "Start downloading data..."
    http_response = urllib2.urlopen(http_request)
    print "Finish downloading data..."

    print http_response.code

    print http_response.info()
    
    print "---------------data---------------"

    print http_response.open()

if __name__ == "__main__":
    fetch("http://www.baidu.com")