Hi,
I'm really curious what species of snakes you think are the most "friendly", inquisitive or "wise".
I was once having a young ball python, and he was such sweetheart, always looking to be handled, really inquisitive and curious of everything (he was never doing a "ball thing"!). Unfortunately I was not able to get him to eat frozen prey, and I had to find him new home...
On the other hand I also have a russian rat who is on the "I'm afraid of everything" side, and a corn snake who is really calm.