Indonesian pythons flowers

Flower pythons are not venomous kind of snake that large. Biggest size is said to exceed 10 meters. Longer than the anaconda (Eunectes), the largest and longest snake in South America. Other names are python snake fields; rice-n-etem (Simeulue); snake petola (Ambon), and in English reticulated python or often abbreviated retics.
Here's an example image...: