docs: def reset(self):
          """
          Resets solver data.
          """
          
          self.k = 0.
          self.x = np.zeros(0)
          self.lam = np.zeros(0)
          self.nu = np.zeros(0)
          self.mu = np.zeros(0)
          self.pi = np.zeros(0)
          self.status = self.STATUS_UNKNOWN
          self.error_msg = ''
          self.obj_sca = 1.