code: def __init__(self, length, num_chunks, chunk_size):
      self.length = length
      self.num_chunks = num_chunks
      self.chunk_size = chunk_size
  
imports: import math
  import numpy
  import os
  from typing import Generator, Union, Sequence
  import torch
  import torch.utils.data.dataset
label_desc: Use image node_id 1 to create a new Chunker object  with example: obj = Chunker(length, num_chunks, chunk_size)