def usermanager(): global window window = QDialog() userMgr = UserManager.Ui_Dialog() userMgr.setupUi(window) view = userMgr.tableUser model = QSqlTableModel() view.setModel(model) model.setTable('USER') model.select() model.setHeaderData(0, Qt.Horizontal, '用户名') model.setHeaderData(1, Qt.Horizontal, '密码') model.setHeaderData(2, Qt.Horizontal, '用户权限') window.show()