string ret;
  for (int64_t i = 0; i < num_elts; ++i) {
    if (i > 0) strings::StrAppend(&ret, ", ");
    strings::StrAppend(&ret, array[i]);
  }
  return ret;
}

string PrintTensor(const TensorProto& tensor_proto);

string PrintTensorProto(const TensorProto& proto);

string PrintAttrValue(StringPiece, const AttrValue& attr_value);

bool IsEmptyList(const AttrValue::ListValue& list);

  for (int d = 0; d < shape.dims(); ++d) {
    if (d > 0) strings::StrAppend(&ret, ", ");
    strings::StrAppend(&ret, shape.dim_size(d));
  }
  strings::StrAppend(&ret, "}");
  return ret;
}

string PrintTensor(const TensorProto& tensor_proto) {
  Tensor t(tensor_proto.dtype());
  CHECK(t.FromProto(tensor_proto));
  const int64_t num_elts = t.NumElements();
  switch (t.dtype()) {
    case DT_FLOAT: