code: def do_help(self, argv):
          
          if argv[1:]:
              for arg in argv[1:]:
                  if self._do_one_help(arg):
                      break
          else:
              # If bare 'help' is called, print this class's doc
              # string (if it has one).
              doc = self._doc_to_help(self.__class__)
              if doc:
                  sys.stdout.write(doc + '\n')
                  sys.stdout.flush()
docs: \
          help [COMMAND]          Prints help for the specified COMMAND.  'h'
                                  and '?' are synonyms.