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}
给出了相应的学生偏好字典，我想编写一个函数来返回平均得分最低的学生，我该怎么做。范例：alonzo的整体评分为4，我该怎么做？有人可以帮我这个忙吗？
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])
要么，
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))
打印：
alonzo
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我来说两句