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")