code: def timing(label, printon=True):
      """Context manager that times and logs execution."""
      if printon:
          print("enter %s" % label)
      start_time = time.time()
      yield
      time_taken = (time.time() - start_time) / 60.0
      if printon:
          print("exit  %s (%.3fmin)" % (label, time_taken))
  
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 7 for calling a global function with example usage: timing(label, printon) without return types