smesh/doc/salome/examples/creating_meshes_ex01.py

# Construction of a Mesh

import salome
salome.salome_init_without_session()
import GEOM
from salome.geom import geomBuilder
geompy = geomBuilder.New()

import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
smesh =  smeshBuilder.New()

# create a box
box = geompy.MakeBox(0., 0., 0., 100., 200., 300.)
idbox = geompy.addToStudy(box, "box")

# create a mesh
tetra = smesh.Mesh(box, "MeshBox")

algo1D = tetra.Segment()
algo1D.NumberOfSegments(7)

algo2D = tetra.Triangle()
algo2D.MaxElementArea(800.)

algo3D = tetra.Tetrahedron()
algo3D.MaxElementVolume(900.)

# compute the mesh
ret = tetra.Compute()
if ret == 0:
    print("problem when computing the mesh")
else:
    print("mesh computed")
    pass