From the videos and research I have done it is quite common for blood pythons to have a bad attitude however I have seen some that are quite docile and good natured and they have a reputation of eating like a pig. Again I have no personal experience but I have done a ton of reading up on bloods.
But with my experience with dumerils boas they are very gentle and like someone else mentioned they are curious but cautious so they dont tend to move around a lot while holding them like a lot of boas do but which makes them a much easier snake to handle despite their size.