如何使用字典将这些整数元组列表翻译成名称元组列表？

Question

users = [
    {'id': 0, "name": "Hero"},
    {'id': 1, "name": "Dunn"},
    {'id': 2, "name": "Sue"},
    {'id': 3, "name": "Chi"},
    {'id': 4, "name": "Thor"},
    {'id': 5, "name": "Clive"},
    {'id': 6, "name": "Hicks"},
    {'id': 7, "name": "Devin"},
    {'id': 8, "name": "Kate"},
    {'id': 9, "name": "Klein"},
]
# list of users

friendship_pairs = [(0, 1), (0, 2), (1, 2), (1, 3), (2, 3), (3, 4), (4, 5),
                    (5, 6), (5, 7), (6, 8), (7, 8),
                    (8, 9)]  # list of friendship pairs

# it is easy to make a dictionary list of friendships for the IDs as the friendship_pairs and written in terms of IDs
# what if I wanted this dict to show for example "Hero": ["dunn","Sue"] instead of 0:[1,2]
friendships = {user['id']: [] for user in users}

for i, j in friendship_pairs:
    friendships[i].append(j)
    friendships[j].append(i)

display(friendships)

# I made a dictonary of intergers:names

user_Ids = list(user['id'] for user in users)
user_Names = list(user['name'] for user in users)

converter = dict(zip(user_IDS, user_Names))

# How can I use this to turn 'friendship_pairs' into something like 'friendship_pairs_names' 
# which has the same information has friendship_pairs but uses their names

我希望能够输入 friendship_pairs 和 return 一个具有相同信息的变量，其中用户的 ids 值被用户的名称值替换，这样我可以使相同的字典显示在 ids 中，带有名称。欢迎任何关于更快或更清洁方法的建议。

Answer 1

你可以试试这个

group= [(list(users[x].values())[1],list(users[y].values())[1] )for x,y in friendship_pairs]

产出

[('Hero', 'Dunn'),
 ('Hero', 'Sue'),
 ('Dunn', 'Sue'),
 ('Dunn', 'Chi'),
 ('Sue', 'Chi'),
 ('Chi', 'Thor'),
 ('Thor', 'Clive'),
 ('Clive', 'Hicks'),
 ('Clive', 'Devin'),
 ('Hicks', 'Kate'),
 ('Devin', 'Kate'),
 ('Kate', 'Klein')]

Answer 2

编写一个将 id 映射到名称的字典。像这样：

names = {user['id']:user['name'] for user in users}

然后您可以使用与为 id 创建字典相同的方式创建字典，但使用 names[id] 而不是 id，如下所示：

users =[
    {'id':0, "name":"Hero"},
    {'id':1, "name":"Dunn"},
    {'id':2, "name":"Sue"},
    {'id':3, "name":"Chi"},
    {'id':4, "name":"Thor"},
    {'id':5, "name":"Clive"},
    {'id':6, "name":"Hicks"},
    {'id':7, "name":"Devin"},
    {'id':8, "name":"Kate"},
    {'id':9, "name":"Klein"},
]

names = {user['id']:user['name'] for user in users}

friendship_pairs = [(0,1),(0,2),(1,2),(1,3),(2,3),(3,4),(4,5),(5,6),(5,7),(6,8),(7,8),(8,9)]

friendships = {user['name']: [] for user in users}

for i, j in friendship_pairs:
    friendships[names[i]].append(names[j])
    friendships[names[j]].append(names[i])

print(friendships)

输出：

{
 'Hero': ['Dunn', 'Sue'],
 'Dunn': ['Hero', 'Sue', 'Chi'],
 'Sue': ['Hero', 'Dunn', 'Chi'],
 'Chi': ['Dunn', 'Sue', 'Thor'],
 'Thor': ['Chi', 'Clive'],
 'Clive': ['Thor', 'Hicks', 'Devin'],
 'Hicks': ['Clive', 'Kate'],
 'Devin': ['Clive', 'Kate'],
 'Kate': ['Hicks', 'Devin', 'Klein'],
 'Klein': ['Kate']
}

你也可以使用 setdefault 不需要 {user['name']: [] for user in users} 字典理解，而是这样做：

friendships = {}
for i, j in friendship_pairs:
    friendships.setdefault(names[i], []).append(names[j])
    friendships.setdefault(names[j], []).append(names[i])

如何使用字典将这些整数元组列表翻译成名称元组列表？

How can I translate these list of integer tuples into a list of name tuples using a dictionary?

python

data-science

python-3.8