如何将列表的值分配到字典里

mrdeer

我想把属于各个城市的值分配到省份，并且统计总数，目前只做到统计城市的总数，但想不出统计省份总数的方式。
list1 = [["青岛",100],["长春",100],["吉林",100],["长春",100]]
province_dict = {"吉林":["长春","吉林","四平"], "山东":["青岛","东营","济南"],"江苏":["连云港","南京","苏州"]}
# Create a dictionary with city names as key
list2 = []
for i in list1:
    list2.append(i[0])
dict1 = {i:[] for i in list2}     

# Assign area into city
for i in list1:
    for keys,values in dict1.items():
        if i[0] == keys :
            values.append(i[1])

dict2 = dict(zip(dict1.keys(), [[sum(item)] for item in dict1.values()]))

suchocolate

list1 = [["青岛", 100], ["长春", 100], ["吉林", 100], ["长春", 100]]
province_dict = {"吉林": ["长春", "吉林", "四平"], "山东": ["青岛", "东营", "济南"], "江苏": ["连云港", "南京", "苏州"]}
city_dict = dict()  # province_dict的反向字典
for k, v in province_dict.items():
    for j in v:
        city_dict[j] = k  # {"长春": "吉林", "四平": "吉林" ...}
# print(city_dict)
result = dict.fromkeys(province_dict.keys(), 0)  # 创建结果字典
for c in list1:
    result[city_dict[c[0]]] += c[1]  # 累计分
print(result)

mrdeer

问题已解决 谢谢大家！

mrdeer

suchocolate 发表于 2021-10-28 08:27

谢谢大佬！

mrdeer

suchocolate 发表于 2021-10-28 08:27

大佬 你是怎么学的呀 有什么推荐的学习方法和资源吗

suchocolate

mrdeer 发表于 2021-10-28 12:49
大佬 你是怎么学的呀 有什么推荐的学习方法和资源吗

小甲鱼的书，runoob.com，力扣题库等。