class_docstr: A single training/test example.
class_docstr_tok: ["A","single","training\/test","example","."]
code: def __init__(self, idx, text, code, url=None):
      self.idx = idx
      self.text = text
      self.code = code
      self.url = url
  
imports: import json
  import torch
  from torch.utils.data import DataLoader, Dataset
label_desc: Use image node_id 1 to create a new Example object from inherited base classes: object with example: obj = Example(idx, text, code, url)