-print "Number of nodes after MergeNodes:", trias.NbNodes()
-print ""
-print "Number of elements before MergeEqualElements:"
-print "Edges : ", trias.NbEdges()
-print "Triangles : ", trias.NbTriangles()
-print "Quadrangles: ", trias.NbQuadrangles()
-print "Volumes : ", trias.NbVolumes()
+print("Number of nodes after MergeNodes:", trias.NbNodes())
+print("")
+print("Number of elements before MergeEqualElements:")
+print("Edges : ", trias.NbEdges())
+print("Triangles : ", trias.NbTriangles())
+print("Quadrangles: ", trias.NbQuadrangles())
+print("Volumes : ", trias.NbVolumes())