code: def main():
      parser = get_parser()
      args = parser.parse_args()
  
      d = Dictionary.load(args.unit_dict)
      symbols = set(d.symbols)
  
      for line in sys.stdin:
          items = line.rstrip().split()
          skip = len(items) < 2
          for x in items[1:]:
              if x not in symbols:
                  skip = True
                  break
          if not skip:
              print(line, end="")
  
imports: import argparse
  import sys
  from fairseq.data import Dictionary
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types