Function as_py_list

dali/python/backend_impl.cc:132–138

template <int ndim>
py::list as_py_list(const TensorShape<ndim> &shape) {
  py::list ret(shape.size());
  for (int i = 0; i < shape.size(); i++) {
    ret[i] = shape[i];
  }
  return ret;
}

template <typename Backend>
py::list py_shape(const Tensor<Backend> &t) {