database_client.py 文件源码

def _test_db(self):

        @db_connection
        def get_test_value():
            return 1325  # misc value, the decorator will return None on failure

        test_value = None
        try:
            test_value = get_test_value()
        except OperationalError as exc:
            print("Exception caught: " + str(exc))

        if test_value is not None:
            print("Database access test OK")
        else:
            print("Database access test failed :(")