class_docstr: Base class for Datasets.
code: def __getattr__(self, __name: str) -> Any:
      try:
          return self._mapper[__name].get_value()
      except KeyError as exc:
          if __name in self.fields:
              return UNSET
  
          raise AttributeError(
              f"'{type(self).__name__}' object has no attribute '{__name}'"
          ) from exc
  
imports: import typing
  from dataclasses import dataclass
  from pathlib import Path
  from types import MappingProxyType
  from typing import Any, ClassVar, Generic, List, Literal, Optional, Tuple, Type, TypeVar, Union, cast, get_origin
  from typing_extensions import dataclass_transform
  from pennylane.data.base import hdf5
  from pennylane.data.base.attribute import AttributeInfo, DatasetAttribute
  from pennylane.data.base.hdf5 import HDF5Any, HDF5Group, h5py
  from pennylane.data.base.mapper import MapperMixin, match_obj_type
  from pennylane.data.base.typing_util import UNSET, T
label_desc: Use image node_id 15 for calling the Dataset obj's underlying member method code with example usage: obj.__getattr__(__name) and returns: self, UNSET