code: def reservations(self):
          
          command = [SINFO, '--reservation']
          output = subprocess.check_output(command, env=SINFO_ENV)
          output = output.decode()
          it = iter(output.splitlines())
          next(it)
          for line in it:
              rsv = Reservation.from_sinfo(line)
              yield rsv.name, rsv
docs: get nodes of every reservations