# Entity type

# create a mesh
from mechanic import *

# make the mesh quadratic
mesh.ConvertToQuadratic()
# make some elements bi-quadratic
for face in shape_faces[: len(shape_faces) // 2]:
    mesh.ConvertToQuadratic( theSubMesh=mesh.Group( face ), theToBiQuad=True )

# get triangles with 7 nodes
filter_tri = smesh_builder.GetFilter(SMESH.FACE, SMESH.FT_EntityType,'=', SMESH.Entity_BiQuad_Triangle )
ids_tri = mesh.GetIdsFromFilter(filter_tri)
print("Number of bi-quadratic triangles:", len(ids_tri))