show "control points" or "solid point" in rhono

show_points_.py

#from typing import Any, Iterable

import Rhino
import rhinoscriptsyntax as rs
import scriptcontext as sc

doc = Rhino.RhinoDoc.ActiveDoc  # type: Rhino.RhinoDoc
objectTable = doc.Objects  # type: Rhino.DocObjects.Tables.ObjectTable
selected_objects = objectTable.GetSelectedObjects(includeLights=False, includeGrips=False)  # type: Iterable[Rhino.DocObjects.RhinoObject]

# selected_objects, whose type is EnumeratorWrapper, can not use len(selected_objects) nor selected_objects.Count
selection_exists_count = 0
for o in selected_objects:
    selection_exists_count = selection_exists_count + 1

if selection_exists_count ==0:
    # prompt user selection
    objs = rs.GetObjects("Select  objects") # type: Iterable[Rhino.DocObjects.RhinoObject]
else:
    # obj = selected_objects don't work. Perhaps because one EnumeratorWrapper can one iteration, we have to assign again.
    objs = objectTable.GetSelectedObjects(includeLights=False, includeGrips=False)# type: Iterable[Rhino.DocObjects.RhinoObject]

curves_of_surfs = []
poly_surfaces = []
for obj in objs:
    if rs.IsPolysurface(obj):
        # for some reason,
        # we can not do rs.Command("_SolidPtOn Enter") here
        poly_surfaces.append(obj)
    else:
        # we cannot use rs.EnableObjectGrips(obj) because the points disappear after selection changed.
        if rs.IsCurve(obj) or rs.IsSurface(obj):
            curves_of_surfs.append(obj)

for obj in curves_of_surfs:
    rs.Command("_SelNone")
    rs.SelectObject(obj)
    rs.Command(" _PointsOn Enter")

# Note:
# if obj is closed-polysurface,
#   we can not use _PointsOn.
#   we can use _SolidPtOn
# if obj is open-polysurface,
#   we can not use _PointsOn.
#   we **can** use _SolidPtOn
for obj in poly_surfaces:
    rs.Command("_SelNone")
    rs.SelectObject(obj)
    rs.Command("_SolidPtOn Enter")

rs.Redraw()