1. 执行清理自定义拆分法向数据

import bpy
p = bpy.context.selected_objects # 获取选中的物品列表
for p1 in p:
    try:
        bpy.context.view_layer.objects.active = p1 # 设置物体未激活状态
        bpy.ops.mesh.customdata_custom_splitnormals_clear() # 执行清理自定义拆分法向数据
        print(p1.name)
    except Exception as e:
        pass