init_categories.py 文件源码

def link_crude_medium_oils(session):
    # our category
    top, categories = get_categories_by_names(session, 'Crude',
                                              ('Medium',))

    oils = get_oils_by_api(session, 'Crude',
                           api_min=22.3, api_max=31.1)

    count = 0
    for o in oils:
        o.categories.extend(categories)
        count += 1

    logger.info('{0} oils added to {1} -> {2}.'
                .format(count, top.name, [n.name for n in categories]))
    transaction.commit()