获取access_token，服务器返回Bad Request

[TrigoldenZx]

使用SDK中的方法去获取access_token，服务器返回Bad Request，有谁知道是哪里有问题吗？

代码如下：
import urllib2
import urllib
from snspy import APIClient
from snspy import SinaWeiboMixin

def wbAPItest():
client = APIClient(SinaWeiboMixin, app_key=appkey, app_secret=appsec, redirect_uri=redirurl)
url = client.get_authorize_url()
r = client.request_access_token(authcode)
access_token = r.access_token # access token，e.g., abc123xyz456
expires = r.expires

if name=='main':
httpHandler = urllib2.HTTPHandler(debuglevel=1)
httpsHandler = urllib2.HTTPSHandler(debuglevel=1)
opener = urllib2.build_opener(httpHandler, httpsHandler)
urllib2.install_opener(opener)
wbAPItest()

运行后日志：
ERROR:root:POST: https://api.weibo.com/oauth2/access_token
send: 'POST /oauth2/access_token HTTP/1.1\r\nContent-Length: 204\r\nAccept-Encoding: gzip\r\nConnection: close\r\nUser-Agent: Python-urllib/2.7\r\nHost: api.weibo.com\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\nclient_secret=b6745a6318f713f8f00b8d715927fab5&code=b0d87cc1e249a30626b82549376d830e&grant_type=authorization_code&client_id=2066080083&redirect_uri=http%3A//open.weibo.com/apps/2066080083/privilege/oauth'

reply: 'HTTP/1.1 400 Bad Request\r\n'
header: Server: nginx/1.6.1

header: Date: Tue, 19 May 2015 08:47:05 GMT

header: Transfer-Encoding: chunked

header: Connection: close

header: Pragma: No-cache

header: Cache-Control: no-cache

header: Expires: Thu, 01 Jan 1970 00:00:00 GMT

header: Api-Server-IP: 10.75.25.115

[duoluoxiaosheng]

我也遇到同样的为题，解决了吗