A very simple question which seems to be tricky to figure out! All geom prims have a World Bounding Box shown in Solaris Scene Graph Details. How does one access that via Python and Vex?! I've tried the following, but I get inconsistent results that are not the same as what's shown in Scene Graph Details!

Very late reply but just ran into the same issue. This works:

from pxr import Usd, UsdGeom

node = hou.pwd()
stage = node.editableStage()

prim = stage.GetPrimAtPath('/scene/geo/cube')
bbox_cache = UsdGeom.BBoxCache(0, )
bbox = bbox_cache.ComputeWorldBound(prim)
bounds = bbox.ComputeAlignedBox()

print bounds