code: def expand_range(arg, value_delimiter=',', range_delimiter='-'):
      
      values = list()
      expanded = arg.split(value_delimiter)
      for item in expanded:
          if range_delimiter in item:
              start, end = item.split(range_delimiter)
              _expand = range(int(start), int(end) + 1)
              values.extend([str(x) for x in _expand])
          else:
              values.extend([item])
      return [str(x) for x in values]
docs: Expands a delimited string of ranged integers into a list of strings
  
      :param arg: The string range to expand
      :param value_delimiter: The delimiter that separates values
      :param range_delimiter: The delimiter that signifies a range of values
  
      :return: An array of expanded string values
      :rtype: list