在Python中创建另两个字典

Question

我有下列词典：

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

以及

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

我想作为这两个的结果，下一个字典，如果一个值在电影和电视节目中重复出现，必须出现如下：

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

到目前为止，我的代码是：

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

但我得到以下结果：

print(tv_movies)

{Viola Davis'：[“办公室”，“如何逃脱谋杀”，“绯闻女孩”]，“Jennifer Lawrence'：[“办公室”，“如何逃脱谋杀”，“绯闻女孩”]，“Blake Lively'：[“办公室”，“如何逃脱谋杀”，“绯闻女孩”]}

我困在这里了，你能帮帮我吗？。非常感谢

Answer 1

ChainMap在V3.3中受支持，因此下面是与PythonV2.x和3.x兼容的代码

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)

Answer 2

也许是这样的？你知道吗

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