code: def main():
      args = get_args()
      data = read_tsv(args.file_dir)
      myfile = pd.DataFrame(data=data)
      nan_value = float("NaN")
      myfile.replace("", nan_value, inplace=True)
      myfile.dropna(inplace=True)
      myfile.reset_index(drop=True, inplace=True)
  
      segmented_text = []
      for i in range(len(myfile)):
          segmented_text.extend(get_split(myfile.iloc[i][0]))
  
      df = pd.DataFrame(segmented_text, index=None)
      df.to_csv(args.out, sep="\n", header=False, index=False)
  
imports: import argparse
  import pandas
label_desc: Use image node_id 4 for calling a global function with example usage: main() without return types