blender_screen_coordinates.py

    # Initialize the camera
    camera = bpy.data.cameras.new('Camera')
    camera_obj = bpy.data.objects.new('Camera', camera)
    scene.objects.link(camera_obj)

    scene.objects.active = camera_obj
    scene.camera = camera_obj
    camera_obj.select = True

    camera_obj.location = (0, 0, 0)
    camera_obj.rotation_euler = (np.radians(45), 0, 0)

    ############################################################################

    #obj = blender_utils.object_to_scene(OBJECT_DEFINITIONS[0][0], OBJECT_DEFINITIONS[0][1])

    loc = (0,6,-6)
    bpy.ops.mesh.primitive_cube_add(location=loc)
    obj = bpy.context.selected_objects[0]

    obj.location = loc
    obj.rotation_euler = (0, 0.0, 0.0)
    obj.scale = (1.2, 1.2, 1.2)
    obj.select = True

    resolution_x = scene.render.resolution_x
    resolution_y = scene.render.resolution_y
    aspect_ratio = resolution_x / resolution_y

    vertices = obj.data.vertices
    screen_coords = []

    for v in obj.data.vertices:

        co_3d = obj.matrix_world * v.co
        co_2d = bpy_extras.object_utils.world_to_camera_view(scene, camera_obj, co_3d)

        # If you want pixel coords
        render_scale = scene.render.resolution_percentage / 100.0
        render_size = (int(scene.render.resolution_x * render_scale),
                       int(scene.render.resolution_y * render_scale))

        x = round(viewport_size[0] * (1.0- co_2d.x))
        y = round(viewport_size[1] * (1.0- co_2d.y))
        screen_coords.append((x,y))