Question

我有以下词典：

movies = {"Fences": "Viola Davis", "Hick": "Blake Lively",
           "The Hunger Games": "Jennifer Lawrence"}

和

tvshows = {"How to Get Away with Murder": "Viola Davis",
            "Gossip Girl": "Blake Lively",
            "The Office": "Steve Carrell"}

我希望这两个词的结果是下一个词典，如果在电影和电视剧中重复一个值必须如下所示：

{"Viola Davis": ["Fences", "How to Get Away with Murder"],
   "Steve Carrell": ["The Office"], "Jennifer Lawrence":
   ["The Hunger Games"], "Blake Lively": ["Hick",
   "Gossip Girl"]}

我的代码到现在为止：

tv_movies = { actor : [ program for program, actor in tvshows.items() if actor == actor  ] for movie, actor in movies.items()  }

但我得到以下输出：

print(tv_movies)

{'Viola Davis'：['The Office'，'如何摆脱谋杀'，'绯闻女孩''，'Jennifer Lawrence'：'''办公室'，'如何摆脱谋杀'，'绯闻女孩']，'布莱克活泼'：['办公室'，'如何摆脱谋杀'，'绯闻女孩'}}

我被困在这里，你能帮帮我吗？非常感谢你

Answer 1

也许是这样的？

from collections import ChainMap, defaultdict
d = defaultdict(list)
for title, actor in ChainMap(movies, tvshows).items():
    d[actor].append(title)

Answer 2

V3.3支持ChainMap，因此这里的代码与python V2.x和3.x

兼容

lis = [movies, tvshows] #make a list of dictionaries - movies, tvshows, etc..
d = {}
for element in lis:
    for key, value in element.items():
        if value not in d.keys():
            d[value] = [key]
        else:
            d[value].append(key)

在Python中用另外两个创建字典

2 个答案: