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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unfinished(finished_status, update_interval, table, status_column, edit_at_column):
 """ Create text sql statement query for sqlalchemy that getting all unfinished task. :param finished_status: int, status code that less than this will be considered as unfinished. :param update_interval: int, the record will be updated every x seconds. :return: sqlalchemy text sql statement. **中文文档** 状态码小于某个值, 或者, 现在距离更新时间已经超过一定阈值. """

    sql = select([table]).where(
        or_(*[
            status_column < finished_status,
            edit_at_column < x_seconds_before_now(update_interval)
        ])
    )
    return sql