带有元组列表的嵌套字典作为来自python中DATA文件的值

Question

请帮忙。我有一个包含 4 列（userid、movieid、score、timestamp）的数据文件，如下所示：196 242 3   881250949186 302 3   89171774222  377 1   878887116196 51  2   88060692362  257 2   879372434我正在尝试创建一个看起来像这样的嵌套字典：用户 = {'196': [('242', '3'), ('51', '2')], '186': ['302','3'] ...}我的代码只为每个用户 ID 选取一个元组 (movieid, score)：def create_users_dict():    try:        users = {}        for line in open('u.data'):            (id, movieid, rating, timestamp) = line.split('\t')[0:4]            users[id] = (movieid, rating)    except IOError as ioerr:        print('There is an error with the file:' + str(ioerr))    return usersusers = create_users_dict()用户 = {'196': ('51', '2'), '186': ('302', '3')...}