class_docstr: 自定义数据集
code: def __len__(self):
      return len(self.images_path)
  
file_path: deep-learning-for-image-processing/deploying_service/deploying_pytorch/convert_tensorrt/convert_resnet34/my_dataset.py
imports: from PIL import Image
  import torch
  from torch.utils.data import Dataset
label_desc: Use image node_id 2 for calling the MyDataSet obj's underlying member method code with example usage: obj.__len__() and returns: len