Being a primitive species of python or not there's still the possibility of venom evolving in some reptile species, they've been around as long as other snake species that have evolved the use of venom, although not at the advanced state as seen in Elapids and some Colubrids. Recently the Komodo Dragon and Lace Monitor have been shown to possess venom glands, and possibly some other Varanus species, also Bearded Dragons- one of the toxins found in the venom of the Bearded Dragon had previosuly only been identified in rattlesnake venom. Being primitive snakes they could have the potential to evolve the use of venom in a different way, released from the venom glands into the saliva and the venom working its way into the blood when the reptile chews on its victim. Being a primitive snake they would be more closely related to varanids or whatever lizard pythons evolved from. Evolution of animals in Australia has led to some bizarre results and anything could be possible.
I should have said more of a general reaction resulting from some BHP bites, i've copped some pretty nasty bites from pythons that have taken a while to heal, not from BHP tho.