code: def newer(source, target):
      """
      Return true if 'source' exists and is more recently modified than
      'target', or if 'source' exists and 'target' doesn't.  Return false if
      both exist and 'target' is the same age or younger than 'source'.
      """
      if not os.path.exists(source):
          raise ValueError(
              "file '%s' does not exist" % os.path.abspath(source)
          )
      if not os.path.exists(target):
          return 1
  
      mtime1 = os.stat(source)[ST_MTIME]
      mtime2 = os.stat(target)[ST_MTIME]
  
      return mtime1 > mtime2
  
imports: import itertools
  import json
  import os
  from stat import ST_MTIME
  import argparse
  import re
  import textwrap
  import numpy
label_desc: Use image node_id 15 for calling a global function with example usage: newer(source, target) and returns: unknown, int