--- /dev/null
+# Ball diameter
+
+# create a mesh
+from mechanic import *
+
+# create several balls with increasing diameter
+for i in range(1,10):
+ diameter = float( i )
+ mesh.AddBall( i, diameter )
+ pass
+
+# get balls with diameter > 5.
+diam_filter = smesh_builder.GetFilter(SMESH.BALL, SMESH.FT_BallDiameter,'>', 5. )
+ids = mesh.GetIdsFromFilter( diam_filter )
+print("Number of balls with diameter > 5:", len(ids))