class_docstr: Format for numpy array
  
  Parameters
  ----------
  X : 2D array
      The input matrix
class_docstr_tok: ["Format","for","numpy","array","Parameters","--","--","--","--","--","X",":","2D","array","The","input","matrix"]
code: def __getitem__(self, index):
      x = self.x[index]
      return x
  
imports: from torch.utils.data import Dataset
  from torch.utils.data import DataLoader, WeightedRandomSampler
  import torch
  import numpy
  import scipy
  import json
  from sklearn.utils import check_array
  import pandas
  import warnings
label_desc: Use image node_id 3 for calling the PredictDataset obj's underlying member method code with example usage: obj.__getitem__(index) and returns: x