是因为close之前没有取消本地变量对server端对象的引用,如tb=s.loadTable("day","dfs://day"),close()之前让tb = None,取消本地变量对server端对象的引用,就可以了
请参考pythonapi上传的数据表的生命周期
https://gitee.com/dolphindb/api_python3#23-%E4%B8%8A%E4%BC%A0%E7%9A%84%E6%95%B0%E6%8D%AE%E8%A1%A8%E7%9A%84%E7%94%9F%E5%91%BD%E5%91%A8%E6%9C%9F