[Q] COnverting particle sys and delete just parent particles

Coding Python Support
1

Im looking for a method to convert a particle system and then delete the parent particles. When i do it manually with parent unchecked under render it works fine. BUt when using python it seems parents are visible.

I got this piece of code to convert the modifer to mesh.

selected = bpy.context.selected_objects            active = bpy.context.active_object
            # select active object
            bpy.context.scene.objects.active = ob
            bpy.ops.object.modifier_convert(modifier=modifierName)
            bpy.ops.object.mode_set(mode='OBJECT')
            for v in bpy.context.active_object.data.vertices:
                    v.select = True
            bpy.ops.object.mode_set(mode='EDIT')

and i can count the number of parent and child using this;

num_parents = len(partSystem.particles)
            num_children = len(partSystem.child_particles)

I dont understand why the parent are visible when its dont by python.