code: def __getitem__(self, index):
      return self.key(self.ls[index])
  
file_path: magnitude/pymagnitude/converter_shared.py
imports: import hashlib
  import numpy
  import os
  from itertools import islice, chain
label_desc: Use image node_id 3 for calling the KeyList obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self