树莓派给微信公众平台测试号传照片的问题求助

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要实现的功能，把一个照片从树莓派传到微信公众平台测试号，使用的是微信的python 的SDK包
微信上面的pythoｎ　的代码如下：

    rjson = wc.media.upload.file(type='image', jpeg = open('/home/pi/test.jpg', 'rb'))
    print rjson
    content = '{"touser":"or0d6t8VKYQQWQZx3Y5nZIYFLvoY", "msgtype":"image", "image": {"media_id":rjson.media_id}}'
    print wc.message.custom.send.post(body=content)


测试反馈的结果如下：那位大哥知道是怎么回事，求助，帮忙，谢谢


Traceback (most recent call last):
  File "banding.py", line 31, in <module>
    print wc.message.custom.send.post(body=content)
  File "/usr/local/lib/python2.7/dist-packages/weixin.py", line 355, in __call__
    self._method, self._client.access_token, **kw)
  File "/usr/local/lib/python2.7/dist-packages/weixin.py", line 235, in _http_call
    return json.read()
  File "/usr/local/lib/python2.7/dist-packages/weixin.py", line 183, in read
    raise APIError(rjson.errcode, rjson.errmsg)
weixin.APIError: 40007:invalid media_id hint: [__qlCa0082age6]