code: def paramsarraybounds(self):
          
          bounds = []
          for (i, param) in self._index_to_param.items():
              if isinstance(param, str):
                  bounds.append(self.model.PARAMLIMITS[param])
              elif isinstance(param, tuple):
                  bounds.append(self.model.PARAMLIMITS[param[0]])
              else:
                  raise ValueError("Invalid param type")
          bounds = [(tup[0] + ALMOST_ZERO, tup[1] - ALMOST_ZERO) for tup in bounds]
          assert len(bounds) == len(self._index_to_param)
          return tuple(bounds)
docs: Bounds for parameters in `paramsarray`.