code: def main(_):
      initialize_globals()
      early_training_checks()
  
      if FLAGS.train_files:
          tfv1.reset_default_graph()
          tfv1.set_random_seed(FLAGS.random_seed)
  
          train()
  
      if Config.is_master_process:
          if FLAGS.test_files:
              tfv1.reset_default_graph()
              test()
  
          if FLAGS.export_dir and not FLAGS.export_zip:
              tfv1.reset_default_graph()
              export()
  
          if FLAGS.export_zip:
              tfv1.reset_default_graph()
              FLAGS.export_tflite = True
  
              if listdir_remote(FLAGS.export_dir):
                  log_error(
                      "Directory {} is not empty, please fix this.".format(
                          FLAGS.export_dir
                      )
                  )
                  sys.exit(1)
  
              export()
              package_zip()
  
          if FLAGS.one_shot_infer:
              tfv1.reset_default_graph()
              do_single_file_inference(FLAGS.one_shot_infer)
  
imports: from __future__ import absolute_import, division, print_function
  import os
  import sys
  import absl.app
  import numpy
  import progressbar
  import shutil
  import tensorflow
  import tensorflow.compat.v1
  import time
  from datetime import datetime
  from ds_ctcdecoder import ctc_beam_search_decoder, Scorer
  from .evaluate import evaluate
  from six.moves import zip, range
  from .util.config import Config, initialize_globals
  from .util.checkpoints import load_or_init_graph_for_training, load_graph_for_evaluation, reload_best_checkpoint
  from .util.evaluate_tools import save_samples_json
  from .util.feeding import create_dataset, audio_to_features, audiofile_to_features
  from .util.flags import create_flags, FLAGS
  from .util.helpers import check_ctcdecoder_version, ExceptionBox
  from .util.logging import create_progressbar, log_debug, log_error, log_info, log_progress, log_warn
  from .util.io import open_remote, remove_remote, listdir_remote, is_remote_path, isdir_remote
label_desc: Use image node_id 22 for calling a global function with example usage: main(_) without return types