code: def main():
      audio_dir = (
          PARAMS.audio_dir
          if PARAMS.audio_dir
          else os.path.join(PARAMS.tsv_dir, "clips")
      )
      _preprocess_data(
          PARAMS.tsv_dir, audio_dir, PARAMS.space_after_every_character
      )
  
file_path: DeepSpeech/bin/import_cv2.py
imports: import csv
  import os
  import subprocess
  import unicodedata
  from multiprocessing import Pool
  import progressbar
  import sox
  from deepspeech_training.util.downloader import SIMPLE_BAR
  from deepspeech_training.util.importers import get_counter, get_imported_samples, get_importers_parser, get_validate_label, print_import_report
  from ds_ctcdecoder import Alphabet
label_desc: Use image node_id 7 for calling a global function with example usage: main() without return types