Having a look on Relab and google maps will tell you whether the property is near a power python.
Take for example a property on Ulster Road., Blockhouse Bay.
Relab warns there is a power python showing in the backyard.
Properties located near Power pythons seem to have a lower value. Despite being located in a area with 3 bedroom house values averaging over $800,000, this property is selling for less than $700,000.