code: def entry(argv):
      '''
      Command entry
      '''
      command_dic = {
  
          'init': run_init,
  
  
      }
      try:
          # 这里的 h 就表示该选项无参数，i:表示 i 选项后需要有参数
          opts, args = getopt.getopt(argv, "hi:")
      except getopt.GetoptError:
          print('Error: helper.py -i cmd')
          sys.exit(2)
      for opt, arg in opts:
          if opt == "-h":
              print('helper.py -i cmd')
              print('cmd list ----------------------')
              print('          init: ')
  
  
  
              sys.exit()
          elif opt == "-i":
  
              if arg in command_dic:
                  command_dic[arg](args)
                  print('QED!')
              else:
                  print('Wrong Command.'f entry(argv):
      '''
      Command entry
      '''
      command_dic = {
  
          'init': run_init,
  
  
      }
      try:
          # 这里的 h 就表示该选项无参数，i:表示 i 选项后需要有参数
          opts, args = getopt.getopt(argv, "hi:")
      except getopt.GetoptError:
          print('Error: helper.py -i cmd')
          sys.exit(2)
      for opt, arg in opts:
          if opt == "-h":
              print('helper.py -i cmd')
              print('cmd list ----------------------')
              print('          init: ')
  
  
  
              sys.exit()
          elif opt == "-i":
  
              if arg in command_dic:
                  command_dic[arg](args)
                  print('QED!')
              else:
                  print('Wrong Command.')
docs: Command entry