code: def __len__(self) -> int:
      return len(self.samples)
  
imports: import tempfile
  from typing import List
  import torch
  import torch.nn
  from captum.influence._core.similarity_influence import cosine_similarity, euclidean_distance, SimilarityInfluence
  from tests.helpers.basic import assertTensorAlmostEqual, BaseTest
  from torch.utils.data import Dataset
label_desc: Use image node_id 2 for calling the RangeDataset obj's underlying member method code with example usage: obj.__len__() and returns: len