code: def source_amplitude(self, kwargs_ps, kwargs_lens):
          
          amp_list = []
          for i, model in enumerate(self._point_source_list):
              amp_list.append(model.source_amplitude(kwargs_ps=kwargs_ps[i], kwargs_lens=kwargs_lens))
          return amp_list
docs: returns the source amplitudes
  
          :param kwargs_ps:
          :param kwargs_lens:
          :return: