Carnivores aren’t really picky about their prey. They hunting herbivores and carnivores and anyone who looks tasty enough. In nature, nobody asks what your culinary preferences are before eating you whole, with your socks on. Carnivores are eating carnivores, and reptiles eat reptiles. Like in this case in Australia. The python is eating the goanna, Australian monitor lizard.
The whole process is taking about two hours. Look how much Australians are caring about their murderous wildlife—they put a sticks and do-not-cross tape around the scene so nobody would interrupt the lunch.