code: def to_alu_hlu_map(input_str):
      
      ret = {}
      if input_str is not None:
          pattern = re.compile(r'(\d+)\s*(\d+)')
          for line in input_str.split('\n'):
              line = line.strip()
              if len(line) == 0:
                  continue
              matched = re.search(pattern, line)
              if matched is None or len(matched.groups()) < 2:
                  continue
              else:
                  hlu = matched.group(1)
                  alu = matched.group(2)
                  ret[int(alu)] = int(hlu)
      return ret
docs: Converter for alu hlu map
  
      Convert following input into a alu -> hlu map:
      Sample input:
  
      ```
        HLU Number     ALU Number
        ----------     ----------
          0               12
          1               23
      ```
  
      ALU stands for array LUN number
      hlu stands for host LUN number
      :param input_str: raw input from naviseccli
      :return: alu -> hlu map