code: def set_power_supplies(self, power_supplies):
          
  
          power_supply_id = 0
          for power_supply in power_supplies:
              yield from self._hypervisor.send('c7200 set_power_supply "{name}" {power_supply_id} {powered_on}'.format(name=self._name,
                                                                                                                       power_supply_id=power_supply_id,
                                                                                                                       powered_on=power_supply))
  
              log.info('Router "{name}" [{id}]: power supply {power_supply_id} state updated to {powered_on}'.format(name=self._name,
                                                                                                                     id=self._id,
                                                                                                                     power_supply_id=power_supply_id,
                                                                                                                     powered_on=power_supply))
              power_supply_id += 1
  
          self._power_supplies = power_supplies
docs: Sets the 2 power supplies with 0 = off, 1 = on.
  
          :param power_supplies: list of 2 power supplies.
          Example: [1, 0] = first power supply is on, second is off.