python执行get提交的方法

import sys, urllib2, urllibdef addGETdata(url, data):  """Adds data to url. Data should be a list   or tuple consisting of 2-item  lists or tuples of the form: (key, value).  Items that have no key should have key set to None.  A given key may occur more than once.  """  return url + '?' + urllib.urlencode(data)zipcode = 'S2S 7U8'url = addGETdata('http://www.yoursiteweb.com/getForecast',         [('query', zipcode)])print "Using URL", urlreq = urllib2.Request(url)fd = urllib2.urlopen(req)while 1:  data = fd.read(1024)  if not len(data):    break  sys.stdout.write(data)