sqlite3 内存mem数据库
https://www.devdungeon.com/content/python-sqlite3-tutorial
args.db_connection = pysqlite3.connect(':memory:') ------ def _Back_Db(args): disk_db = pysqlite3.connect(args.db_name) with disk_db: #disk_db.backup(args.db_connection) (args.db_connection).backup(disk_db) disk_db.close()