You have a warm spot and cool spot inside your enclosure creating a temperature range. Why not do the same with humidity range? The humid hide is one way to offer a range of humidities. Having the entire enclosure at 50%-60% humidity without a humid retreat is the same as having the entire enclosure at 85F without a hot spot....humidity ranges are great for the reptile.

An enclosure humidity of 50% that has a humid hide of 90% humidity provides a pretty wide range and should be fine for most pythons.