code: def get_argument_parser():
      
  
      desc = 'Generate a mapping of Entrez IDs to gene symbols.'
  
      parser = cli.get_argument_parser(desc=desc)
  
      parser.add_argument(
          '-f', '--gene2acc-file', type=str, required=True,
          help=textwrap.dedent("""\
              Path of gene2accession.gz file (from
              ftp://ftp.ncbi.nlm.nih.gov/gene/DATA), or a filtered version
              thereof.""")
      )
  
      parser.add_argument(
          '-o', '--output-file', type=str, required=True,
          help=textwrap.dedent("""\
              Path of output file. If set to ``-``, print to ``stdout``,
              and redirect logging messages to ``stderr``.""")
      )
  
      parser.add_argument(
          '-l', '--log-file', type=str, default=None,
          help='Path of log file. If not specified, print to stdout.'
      )
  
      parser.add_argument(
          '-q', '--quiet', action='store_true',
          help='Suppress all output except warnings and errors.'
      )
  
      parser.add_argument(
          '-v', '--verbose', action='store_true',
          help='Enable verbose output. Ignored if ``--quiet`` is specified.'
      )
  
      return parser
docs: Creates the argument parser for the extract_entrez2gene.py script.
  
      Returns
      -------
      A fully configured `argparse.ArgumentParser` object.
  
      Notes
      -----
      This function is used by the `sphinx-argparse` extension for sphinx.