code: def get_parser():
      parser = argparse.ArgumentParser(
          description="filters a lexicon given a unit dictionary"
      )
      parser.add_argument(
          "-d", "--unit-dict", help="unit dictionary", required=True
      )
      return parser
  
imports: import argparse
  import sys
  from fairseq.data import Dictionary
label_desc: Use image node_id 1 for calling a global function with example usage: get_parser() and returns: parser