code: def reset(self, populations, lag, mu, u_int, j_coup, mean_f):
          
  
          self.set_filling(populations)
          self.param['lambda'] = lag
          self.param['orbital_e'] = mu
          self.selfconsistency(u_int, j_coup, mean_f)
docs: Resets the system into the last known state as given by the input
             values