I think my female is going to be stunning as an adult... I'm really impatient to see her color change for the next year or two! I'm really amazed at the females growth...she is like a weed. I actually looked at her the other day and realized she was a little too skinny and I needed to feed her more often since she is growing so much faster then the male! I might just up her mouse size early instead of more frequent feedings that way the two can stay on the same feeding schedule.
A lot of them can be pretty tolerant but I've had a few snakes worse then Folger in the biting arena! My one boa would strike the side of his cage if he thought you had just glanced in his direction. In general corns and ball pythons are the nicest when it comes to general disposition. The red tail boa can also be really nice there a couple types of red tails that don't fall under that umbrella though.
Pet stores sell milksnakes and kingsnakes as pet snakes but I don't find them as hand able or nice as the others I mentioned. I also used to have a really nasty kingsnake... I eventually gave him to a breeder because he was just too mean for a pet snake but he was drop dead gorgeous and produced some pretty babies. Some snakes are just nasty and their is no changing their minds about being nicer. But in general as long as you handle them consistently, corn.redtail.ballpython., they aren't likely to strike without a reason. Like my python and boa... both are the nicest snakes I have ever owned outside of my two big butt pythons that died but I barely handle them anymore and while they aren't mean they are no longer used to the activity that handling brings and they are more likely to strike these days with nerves or when they startle. If I started taking them out all the time again they would easily be the nice snakes they were when they were younger.
I've only had one almost bite that could have been really bad from a snake and that was from my burmese python, Riddick, that passed away years ago now. Riddick was the nicest snake I have ever owned and was very tolerant but they also get impatient like any animal so... We had been in the kitchen on the floor and he kept trying to get under the table and I kept dragging him back out... eventually he got tired of that game and I wasn't paying enough attention to his body language and didn't realize this, I was talking to someone instead of paying attention to him like I should have been... he turned around and gave me a nice strike aimed at my face... I was totally unprepared for the move and if he had wanted to he would have laid my face open but it was a close mouthed warning strike to get my attention that he was done. This was when he was over 15 feet so I would have needed a lot of work done to my face if he had been serious.
So now that I've written more then you needed... there are a lot of snakes sold as pet snakes that bite more readily then a parrot but then there are ones like the ball python, corn, red tail boa that normally do not. There are also really big snakes that are also really nice but most people can not handle those properly so they really shouldn't be considered as an option for a pet or be in the trade. The bigger snakes can kill you so few people can properly handle them when they are in a mood. These bigger snakes are also what is taking over Florida because people release them outside when they realize this fact.