code: def main():
      source_data = args.audio_folder
      des_dir = args.dest_folder
      print("begin to process data...")
      __process_data(source_data, des_dir)
      __get_vocab(source_data, des_dir)
      print("finish all!")
  
imports: import argparse
  import json
  import os
  import subprocess
label_desc: Use image node_id 3 for calling a global function with example usage: main() without return types