def uploadmedia(imgname):     url_api = ‘https://oapi.dingtalk.com/media/upload?access_token=’     upload_url = url_api + access_token + str(‘&type=image’) #access_token=234567890自己的ID     register_openers()     datagen, headers = multipart_encode({“media”: open(imgname, “rb”)})     # headers = {“Content-Type”:”application/json”, “Charset”:”utf8″}     request = urllib2.Request(upload_url, datagen, headers)     result = urllib2.urlopen(request).read()     result = json.loads(result)     return result.get(‘media_id’) media_id = uploadmedia(imgname) print media_id