code: def check_tf_version():
      """Check that the Tensorflow version is up to date. If it isn't, print an error message and exit the script."""
      try:
          assert_tf_version()
      except AssertionError as e:
          print(e, file=sys.stderr)
          sys.exit(1)
  
imports: from __future__ import print_function
  import tensorflow
  import sys
label_desc: Use image node_id 4 for calling a global function with example usage: check_tf_version() without return types