communicate with google website through code

import urllib
import urllib2

values = {'q' : 'python programming tutorials'}

data = urllib.urlencode(values)
url = 'http://www.google.com/search?' + data

req = urllib2.Request(url)
resp = urllib2.urlopen(req)
respData = resp.read()

saveFile = open('withHeaders.txt','w')
saveFile.write(str(respData))
saveFile.close()