code: def ready(self):
          '''Whether or not enough time has passed since the last failure'''
          if self._last_failed:
              delta = time.time() - self._last_failed
              return delta >= self.backoff()
          return Truf ready(self):
          '''Whether or not enough time has passed since the last failure'''
          if self._last_failed:
              delta = time.time() - self._last_failed
              return delta >= self.backoff()
          return True
docs: Whether or not enough time has passed since the last failure