Mate there's no problem at all in having them in the same enclosure, expecially if they are male and female and its a nice large enclosure. If they are two males its not advisable as they will start combatting in the breeding season. Just make sure at feeding time they are seperated as it will definately cause problems if they are not. Best to leave them seperated after feeding for a while as well just to make sure the feeding responce has switched off, you know how they are when hungry and switched on they can strike at the slightest movement and if thats the other snake youv'e got an issue on your hands. Otherwise all good no problems.