text: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  import argparse
  
  if __name__ == "__main__":
      parser = argparse.ArgumentParser()
      parser.add_argument(
          "square",
          help="display a square of a given number",
          type=int
      )
      args = parser.parse_args()
      print(args.square ** 2)
  