code: def main():
      args = parse_args()
      creator = IndexCreator(args.record, args.index)
      creator.create_index()
      creator.close()
  
file_path: DALI/tools/rec2idx.py
imports: import os
  import time
  import ctypes
  from mxnet.base import _LIB
  from mxnet.base import check_call
  import mxnet
  import argparse
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types