# Belong to Geom

# create mesh
from mechanic import *

# get all faces which nodes lie on the face sub_face3
filter = smesh_builder.GetFilter(SMESH.FACE, SMESH.FT_BelongToGeom, sub_face3)
ids = mesh.GetIdsFromFilter(filter)
print("Number of faces which nodes lie on sub_face3:", len(ids))