utils.py 文件源码

def save_inventory(station, downloaded_bytes_data):
    """Saves the inventory. Raises SqlAlchemyError if station's session is None,
    or (most likely IntegrityError) on failure
    """
    station.inventory_xml = dumps_inv(downloaded_bytes_data)
    try:
        object_session(station).commit()
    except UnmappedInstanceError:
        raise
    except SQLAlchemyError:
        object_session(station).rollback()
        raise