code: def setup_directories(base_dir, subdirs):
      """Setup directories."""
      base_dir = os.path.expanduser(base_dir)
      tf.gfile.MakeDirs(base_dir)
  
      all_dirs = {}
      for subdir in subdirs:
          if isinstance(subdir, six.string_types):
              subdir_tuple = (subdir,)
          else:
              subdir_tuple = subdir
          dir_name = os.path.join(base_dir, *subdir_tuple)
          tf.gfile.MakeDirs(dir_name)
          all_dirs[subdir] = dir_name
      return all_dirs
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import datetime
  import math
  import os
  import pprint
  import random
  import time
  import six
  from tensor2tensor.bin import t2t_trainer
  from tensor2tensor.models.research import rl
  from tensor2tensor.rl import rl_utils
  from tensor2tensor.rl import trainer_model_based_params
  from tensor2tensor.rl.dopamine_connector import DQNLearner
  from tensor2tensor.rl.restarter import Restarter
  from tensor2tensor.utils import trainer_lib
  import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling a global function with example usage: setup_directories(base_dir, subdirs) and returns: all_dirs