从另一个字典创建字典，其中键' =(上一个字典中的值)和值 = (上一个字典中的共享值)

Question

我有一个字典设置为movie:｛actors｝。下面是这本字典的一个片段

movie_dict = {
'Sleepers': {'Brad Pitt', 'Kevin Bacon', 'Dustin Hoffman'}, 
'Troy': {'Brad Pitt', 'Diane Kruger'}, 
'Meet Joe Black': {'Brad Pitt', 'Anthony Hopkins'}, 
'Oceans Eleven': {'Julia Roberts', 'Brad Pitt', 'George Clooney'}, 
'Seven': {'Brad Pitt', 'Morgan Freeman'}
}

我正在努力创建一本联合主演词典，这样每个演员都是关键，它的价值观就是它的一组搭档。

提前感谢您的帮助！：)

Answer 1

您可以使用collections.defaultdict:

>>> from collections import defaultdict
>>> movie_dict = {
...     'Sleepers': {'Brad Pitt', 'Kevin Bacon', 'Dustin Hoffman'},
...     'Troy': {'Brad Pitt', 'Diane Kruger'},
...     'Meet Joe Black': {'Brad Pitt', 'Anthony Hopkins'},
...     'Oceans Eleven': {'Julia Roberts', 'Brad Pitt', 'George Clooney'},
...     'Seven': {'Brad Pitt', 'Morgan Freeman'}
... }
>>> costars = defaultdict(set)
>>> for actors in movie_dict.values():
...     for actor in actors:
...         costars[actor] |= actors - {actor}
...
>>> for actor, actors_costars in costars.items():
...      print(f'{actor}: {actors_costars}')
...
Brad Pitt: {'Anthony Hopkins', 'George Clooney', 'Julia Roberts', 'Diane Kruger', 'Dustin Hoffman', 'Kevin Bacon', 'Morgan Freeman'}
Kevin Bacon: {'Brad Pitt', 'Dustin Hoffman'}
Dustin Hoffman: {'Brad Pitt', 'Kevin Bacon'}
Diane Kruger: {'Brad Pitt'}
Anthony Hopkins: {'Brad Pitt'}
George Clooney: {'Julia Roberts', 'Brad Pitt'}
Julia Roberts: {'George Clooney', 'Brad Pitt'}
Morgan Freeman: {'Brad Pitt'}

Answer 2

也许这就是您想要的。

output = {}
for movie, actors in movie_dict.items():
for actor in actors:
if actor in output:
[output[actor].add(i) for i in actors if i != actor]
else:
output[actor] = set([i for i in actors if i != actor])
print(output)

输出

{'Brad Pitt': {'Anthony Hopkins',
'Diane Kruger',
'Dustin Hoffman',
'George Clooney',
'Julia Roberts',
'Kevin Bacon',
'Morgan Freeman'},
'Dustin Hoffman': {'Brad Pitt', 'Kevin Bacon'},
'Kevin Bacon': {'Brad Pitt', 'Dustin Hoffman'},
'Diane Kruger': {'Brad Pitt'},
'Anthony Hopkins': {'Brad Pitt'},
'Julia Roberts': {'Brad Pitt', 'George Clooney'},
'George Clooney': {'Brad Pitt', 'Julia Roberts'},
'Morgan Freeman': {'Brad Pitt'}}

Answer 3

def type_key():
Item_ = input("item key: ")
return Item_
def Type_val():
sett = set()
x = 1
while x:
sett.add(input("value: "))
x = 2
while x not in (0, 1):
x = int(input("0. break, 1. continue"))
return sett
def craet_dic():
dic = {}
x = 1
while x:
dic[type_key()] = Type_val()
x = 2
while x nit in (0, 1):
x = int(input("0. break, 1. continue: "
return dic
print(craet_dic())