code: def get_nominal(attribute):
      """If attribute is nominal, returns a list of the values"""
      return attribute.split(",")
  
imports: from __future__ import division, print_function, absolute_import
  import re
  import itertools
  import datetime
  from functools import partial
  import numpy
  from scipy._lib.six import next
label_desc: Use image node_id 2 for calling a global function with example usage: get_nominal(attribute) and returns: attribute