File “/usr/local/lib/python2.7/dist-packages/google/protobuf/descriptor.py”, line 654, in new _message.Message._CheckCalledFromGeneratedFile() TypeError: Descriptors should not be created directly, but only retrieved from their parent. 使用caffe模型转tensorflow模型代码的时候出现这个错误，解决方法就是将kcaffe里的caffe_pb.py名字改为caffe_pb2.py，另外删掉caffe_pb.pyc 就可以了，再次调用convert.py就可以了
