creating_path_of_geo_from_maya.py

import hou
import re

node = hou.pwd()
geo = node.geometry()

path_attrib = geo.addAttrib(hou.attribType.Prim, 'path', '')

instance = hou.node('..').name()
base = 'base'
name = 'name'

for prim in geo.prims():
    grps = prim.groups()
    for grp in grps:
        name = grp.name()
        base = re.split(r'Shape$', grp.name())[0]
        
        path_name = '/' + instance + '/' + base + '/' + name
        
        prim.setAttribValue(path_attrib, path_name)