code: def main():
      
      parser = argparse.ArgumentParser(
          description='Auto-generate a RESTful API service '
          'from an existing database.'
          )
      parser.add_argument(
          'URI',
          help='Database URI in the format '
               'postgresql+psycopg2://user:password@host/database')
      parser.add_argument(
          '-d',
          '--debug',
          help='Turn on debug logging',
          action='store_true',
          default=False)
      parser.add_argument(
          '-p',
          '--port',
          help='Port for service to listen on',
          default=5000)
      parser.add_argument(
          '-l',
          '--local-only',
          help='Only provide service on localhost (will not be accessible'
               ' from other machines)',
          action='store_true',
          default=False)
      parser.add_argument(
          '-r',
          '--read-only',
          help='Make all database resources read-only (i.e. only the HTTP GET method is supported)',
          action='store_true',
          default=False)
      parser.add_argument(
          '-s',
          '--schema',
          help='Use this named schema instead of default',
          default=None)
  
  
      args = parser.parse_args()
      app = get_app(args.URI, read_only=args.read_only, schema=args.schema)
      if args.debug:
          app.config['DEBUG'] = True
      if args.local_only:
          host = '127.0.0.1'
      else:
          host = '0.0.0.0'
      app.config['SECRET_KEY'] = '42'
      app.run(host=host, port=int(args.port))
docs: Main entry point for script.