code: def get_bot(self, bot_label):
          
          self.check_bots_ready()
          try:
              return self.bots[bot_label]
          except KeyError:
              message = "No installed bot with label '%s'." % bot_label
              for bot_cls in self.get_bots():
                  if bot_cls.name == bot_label:
                      message += " Did you mean '%s'?" % bot_cls.label
                      break
              raise LookupError(message)
docs: Import all bots and returns a bot class for the given label.
          Raise LookupError if no bot exists with this label.