code: def diff(list1, list2):
      """Difference beteween lists."""
      c = [item for item in list1 if item not in list2]
      c.sort()
      return c
  
imports: import numpy
  import copy
  import pickle
  from scipy import linalg
label_desc: Use image node_id 1 for calling a global function with example usage: diff(list1, list2) and returns: c