问使用urlfetch上传到into存储

EN

class Send_Handler(webapp2.RequestHandler):
    def get(self):
        url = "http://abc.xls"
        result = None
        fetch_(url, result, 'GET') 
        #     self.response.out.write(result.content)

def fetch_(url, result, method):
    # logging.info(result)
    if method=='GET':
        result = urlfetch.fetch(url)
        if result.status_code == 200:
            upload_url = blobstore.create_upload_url('/attachupload')
            logging.info(upload_url)
            fetch_(upload_url, result, 'POST')
    else:
        try:
            r_headers = result.headers
            logging.info(result.content)
            result_2 = urlfetch.fetch(url=url, payload=result.content,method=urlfetch.POST, headers=r_headers)
            # logging.info(result_2)
        except Exception, e:
            logging.error(e)