code: def parser(scope, usage=''):
      
      subcmds = []
      for cmd in commands(scope):
          subcmds.append(cmd.usage())
  
      if subcmds:
          subcmds.sort()
          usage += '\n\nSub-Commands:\n  '
          usage += '\n  '.join(subcmds)
  
      parse = PARSER_CLASS(usage=usage)
      parse.prog = PROGRAM_NAME
      return parse
docs: Generates a default parser for the inputted scope.
      
      :param      scope    | <dict> || <module>
                  usage    | <str>
                  callable | <str>
      
      :return     <OptionParser>