解析python字典中相同键的值

Question

alice_ratings = {"alonzo": 1, "bob": 3, "turing" : 2}bob_ratings = {"alice": 1, "alonzo": 2, "turing": 3}alonzo_ratings = {"alice": 3, "bob": 2, "turing": 1}turing_ratings = {"alice": 2, "alonzo": 1, "bob": 3}给了我相应的学生偏好字典，我想写一个函数，返回一个平均分最低的学生，我该怎么做。示例：alonzo 的总体评分为 4，我该怎么做才能有人帮我解决这个问题

Answer 1

IIUC，用途：

def lowest(*args):

    ratings = {}

    for d in args:

        for k, v in d.items():

            if k in ratings:

                ratings[k] += v

            else:

                ratings[k] = v

    return min(ratings, key=lambda k: ratings[k])

或者，

from collections import defaultdict

def lowest(*args):

    ratings = defaultdict(int)

    for d in args:

        for k, v in d.items():

            ratings[k] += v

    return min(ratings, key=lambda k: ratings[k])

调用函数：

print(lowest(alice_ratings, bob_ratings, alonzo_ratings, turing_ratings))

这打印：

alonzo