code: def index_and_value_from_line(line):
          
          try:
              index = int(line.split(' ')[0])
          except (ValueError, IndexError):
              print('Please enter an integer index as the first argument.')
              index = None
          try:
              value_string = line.split(' ')[1]
          except (ValueError, IndexError):
              print('Please enter a second argument.')
              value_string = None
          return index, value_string
docs: Parse an index (integer) and value (string) from command line args and return them.