code: def cmdline(executable):
      
  
      args = [executable.executable]
      indexed_args = []
  
      for parameter in executable:
  
          optional = (parameter.type == 'boolean') or parameter.default
          has_value = parameter.type != 'boolean'
  
  
          if parameter.longflag:  # use longflag where possible
              flag = "--%s" % parameter.longflag
          elif parameter.flag:
              flag = "-%s VALUE" % parameter.flag
          elif parameter.index:
              flag = parameter.name
              optional = False
  
  
          if has_value:
              flag += " VALUE"
  
          if optional:
              flag = "[" + flag + "]"
  
          if parameter.index:
              indexed_args.insert(int(parameter.index), flag)
          else:
              args.append(flag)
  
      return args + indexed_args
docs: Generates a valid command line call for the executable given by call arguments in `kwargs`
      :param kwargs: values to call the executable
      :return: the command line
      :rtype: list