return nullptr;
  }
  return tflite::python_utils::ConvertToPyString(
      reinterpret_cast<const char*>(builder.GetCurrentBufferPointer()),
      builder.GetSize());
}

PyObject* RegisterCustomOpdefs(PyObject* list) {
  if (!PyList_Check(list)) {
    PyErr_SetString(PyExc_TypeError, "Expected list in argument");
    return nullptr;
  }

  int64_t size = PyList_Size(list);