code: def __init__(self, num_of_data=100, **kwargs):
      super(JittorNormalDataset, self).__init__(**kwargs)
      self._data = list(range(num_of_data))
      self.set_attrs(total_len=num_of_data)
  
file_path: fastNLP/tests/helpers/datasets/jittor_data.py
imports: from fastNLP.envs.imports import _NEED_IMPORT_JITTOR
label_desc: Use image node_id 1 to create a new JittorNormalDataset object from inherited base classes: Dataset with example: obj = JittorNormalDataset(num_of_data)