Aggressive? I don't think there is a such thing when it comes to BPs. That is not an appropriate word at all. Of course I have one older female who does not really like to be handled but she's not aggressive. She's nervous. They can be fearful. Many babies can strike out of fear until they know that hand coming toward them is not going to eat or kill them.. They can strike when in feeding mode because they are hungry and may smell rodent or be honing in on the heat signature coming from the hand coming toward them. Or they can be flighty and hissy like my girl because she doesn't get handled much and is simply voicing her opinion on it, but aggression should never be a BP trait.
What you house them in shouldn't play any role in their demeanor though. It has everything to do with proper heat, humidity, ability to hide, proper food, and handling if you want it to BE a calm pet. If it were possible to provide these things in a cardboard box (that's a joke of course) then your snake would still have the same temperament as it would if it were kept in a tub or a glass aquarium as long as the same requirements were met.