code: def pad_list(old_list, padding_size, padding_value):
      """
      http://stackoverflow.com/questions/3438756/some-built-in-to-pad-a-list-in-python
      Example: pad_list([6,2,3], 5, 0) returns [6,2,3,0,0]
      """
      assert padding_size >= len(old_list)
      return old_list + [padding_value] * (padding_size - len(old_list))
  
imports: import collections
  import datetime
  import os
  import operator
  import shutil
  import time
  import pickle
label_desc: Use image node_id 5 for calling a global function with example usage: pad_list(old_list, padding_size, padding_value) and returns: unknown