Need help with my enclosure please!

[Knightcliffe]

So I am looking at getting a ball python and have been getting some conflicting information. I was told that I should get a closed enclosure and keep the humidity at about 60% but when I started trying to find tanks I was told that they don't need high humidity and that a large water bowl will do just fine as well as a screen top... Anyways I am just wondering who is right as I don't want to listen to one or the other and find out that it is harmful to have high humidity or low.