Ventilation blue...... outside is fine...... a living plant has to give off the waste from photosynthasys..... if it is inclosed in a vivarium with the usual ventilation, the air in the viv will become polluted with the waste from the plant and the humidity will sky rocket.
Plants in office buildings are rotated with fresh plants on a time scale, because, like turf rolled up for transport, plants/grass/turf will survive unsatisfactory environments for a certain amount of time... then they need to recoup in the correct environment (turf be unrolled and layed, office plants put out in sunlight/fresh air)
The OP can do what he likes, if his pythons suffer or die from your advice, I hope you will be satisfied with yourself. My opinion is dont use live plants in enclosed snake environments for the reasons given. You say go ahead, it is fine..... I hope we dont find a thread on here in a few months from the op, saying his snake has scale rot, mites etc
I do agree, the op needs to validate both sides of the arguement..... But he must state that the plant (s) will be inside a vivarium with a living creature, and describe whatever ventilation it has/will have and that high humidity is to be avoided in this enclosed environment.
I for one will be eager to hear what the op finds out and will look forward to updates, as I am sure you will also Blue