Function FromPythonTrampoline

dali/python/backend_impl.cc:475–477

 */
template <typename... Args>
auto FromPythonTrampoline(const char *python_module, const char *attr_name, Args... attr_names) {
  return ExtractPythonAttr(py::module::import(python_module).attr(attr_name), attr_names...);
}

/**
 * @brief Extracts attribute from imported python module.