code: def ensure_dir_exists(dir_name):
      """Makes sure the folder exists on disk.
  
      Args:
        dir_name: Path string to the folder we want to create.
      """
      if not os.path.exists(dir_name):
          os.makedirs(dir_name)
  
imports: from absl import logging
  import argparse
  import collections
  from datetime import datetime
  import hashlib
  import os.path
  import random
  import re
  import sys
  import numpy
  import tensorflow
  import tensorflow_hub
  from tensorflow.contrib import quantize
label_desc: Use image node_id 6 for calling a global function with example usage: ensure_dir_exists(dir_name) without return types