Python添加列表作为字典中的键

Question

我正在尝试创建一个字典，其中键是 date ，
就我而言，每个日期都是这样的列表:[2012, 5, 25]。

这是我从 csv 文件读取到字典中的代码。
此代码已给出，我无法更改它:

def read_profiles(r_file_name):
    """Reads the file profiles-full.csv into a dictionary where the key is the users id 
    and the value is a dictionary with users fields "public", "compl_percent", "gender", 
    "region", "last_login", "age", "body". In addition to this dictionary, the function 
    returns the list of all users that have 0 completion percentage."""
    users = {}
    noinfo_users = []
    with open(r_file_name, 'rb') as csvfile:
        linereader = csv.reader(csvfile)
        for line in linereader:
            profile = {}
            data_fields = ("public", "compl_percent", "gender", "region",
                                     "last_login", "age", "body")
            for field, raw_data in zip(data_fields, line[1:]):
                if field == "compl_percent" and int(raw_data) == 0:
                    noinfo_users.append(int(line[0]))

                if raw_data == "null":
                    profile[field] = None
                elif field == "body":
                    profile[field] = raw_data
                elif field == "last_login": #<=== reading last_login
                    profile[field] = map(int, raw_data.split("-"))
                elif field == "region":
                    profile[field] = map(int, raw_data.split(";"))
                else:
                    profile[field] = int(raw_data)

            users[int(line[0])] = profile
    return users, noinfo_users

这是 csv 文件的内容，对应于这个模式:

"public", "compl_percent", "gender", "region",                  "last_login", "age", "body"**
231702, 1, 60, 0, 1;1;21, 2012-05-15, 0, 171 cm;58 kg

这是配置文件字典中的元素的样子:

1492433: {'body': '160 cm;54 kg', 'compl_percent': 78, 'gender': 0, 'region': [1, 10, 6], 'age': 36, 'last_login': [2012, 5, 25], 'public': 1}

这是我的功能:

def getStrongConnectedForAttr(user,edges,profiles,attr):
    result = dict()
    if user in edges:
        userFriends = edges.get(user)
        for friend in userFriends:
            if isBidirectional(edges,user,friend) == 2:
                if friend in profiles:
                    friendAttr = (profiles.get(friend))[str(attr)]
                    if attr == "last_login":
                        #friendAttr = '-'.join(map(str, friendAttr))
                        friendAttr = tuple(friendAttr)
                    if friendAttr in result: #<===== error
                        result[friendAttr] = result.get(friendAttr) + 1
                    else:
                        result[friendAttr] = 1
        return sorted(result.items(), key=operator.itemgetter(1), reverse=True)
    else:
        return result

它将配置文件作为参数之一，并构建一个空字典。
在 iffriendAttr in result: 行中，我收到错误:

TypeError: unhashable type: 'list'

我尝试在网络上搜索解决方案，发现了很多，尤其是在 Stack Overflow 上，正如你所看到的，我尝试了很多解决方案，其中一个将列表转换为元组，或者将列表连接为字符串。
但它们都不起作用。

Answer 1

您只是将 login_attr 值转换为元组，但忘记了 region 属性。 那些值仍然会引发异常。

您仅在此处测试 login_attr:

if attr == "last_login":
    friendAttr = tuple(friendAttr)

无需将值转换为元组，只需在读取文件时存储元组即可。

替换

elif field == "last_login": #<=== reading last_login
    profile[field] = map(int, raw_data.split("-"))
elif field == "region":
    profile[field] = map(int, raw_data.split(";"))

与

elif field == "last_login":
    profile[field] = tuple(map(int, raw_data.split("-")))
elif field == "region":
    profile[field] = tuple(map(int, raw_data.split(";")))