#import blender namespace
import bpy
#get all selected objects
selection_names = bpy.context.selected_objects

#loop trough all "selection_names"
for i in selection_names:
    #for every object "i":
    #set active object as "i"
    bpy.context.view_layer.objects.active = i

    #go to edit mode of "i"
    bpy.ops.object.editmode_toggle()
    #select all
    bpy.ops.mesh.select_all(action='SELECT')
    #delete all verts
    bpy.ops.mesh.delete(type='VERT')
    #go back to object mode
    bpy.ops.object.editmode_toggle()
    #repeat for next object in "selection_names" till none left