code: def timestamp():
      return datetime.datetime.now().strftime("%Y%m%d%H%M%S")
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import contextlib
  import datetime
  import numbers
  import pdb
  import tempfile
  import time
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 8 for calling a global function with example usage: timestamp() and returns: datetime