[英]Creating a dictionary with a list of names
I have this list of names: [Frank, Sam, Kevin, Jack]
我有以下名单:
[Frank, Sam, Kevin, Jack]
Is it possible to create a dictionary using the names in the list to create something like this? 是否可以使用列表中的名称创建字典来创建类似这样的内容?
'Frank' : {'Sam': 0, 'Kevin': 0, 'Jack': 0},
'Sam' : {'Frank': 0, 'Kevin': 0, 'Jack': 0},
'Kevin' : {'Frank': 0, 'Sam': 0, 'Jack': 0}
'Jack' : {'Frank': 0, 'Sam': 0, 'Kevin': 0}
I want to know if it's possible to iterate through the list, pick the first name and then create a dictionary with it, with the other members in the list as keys and 0 as the default value. 我想知道是否可以遍历列表,选择名字,然后使用它创建一个字典,列表中的其他成员作为键,默认值为0。 And then repeat it for the other elements in the list as well.
然后对列表中的其他元素重复此操作。
I was thinking of using something like this. 我当时正在考虑使用这样的东西。
my_dynamic_vars = dict()
my_dynamic_vars.update({string: dict()})
Any help would be much appreciated. 任何帮助将非常感激。
You can use nested dictionary comprehensions : 您可以使用嵌套字典推导 :
>>> lst = ['Frank', 'Sam', 'Kevin', 'Jack']
>>> dct = {x:{y:0 for y in lst if y != x} for x in lst}
>>> dct
{'Frank': {'Kevin': 0, 'Sam': 0, 'Jack': 0}, 'Kevin': {'Frank': 0, 'Jack': 0, 'Sam': 0}, 'Sam': {'Frank': 0, 'Jack': 0, 'Kevin': 0}, 'Jack': {'Frank': 0, 'Kevin': 0, 'Sam': 0}}
>>>
>>> # Just to demonstrate
>>> from pprint import pprint
>>> pprint(dct)
{'Frank': {'Jack': 0, 'Kevin': 0, 'Sam': 0},
'Jack': {'Frank': 0, 'Kevin': 0, 'Sam': 0},
'Kevin': {'Frank': 0, 'Jack': 0, 'Sam': 0},
'Sam': {'Frank': 0, 'Jack': 0, 'Kevin': 0}}
>>>
ummm 嗯
d= {}
names = ["Frank","Sam","Kevin","Jack"]
for name in names:
d[name] = dict.fromkeys(set(names).difference([name]),0)
print d
is probably how I would do it .. 大概就是我会怎么做..
names = ['Frank', 'Sam', 'Kevin', 'Jack']
d = dict.fromkeys(names, 0)
names_dict = {}
for name in names:
temp = d.copy()
del temp[name]
names_dict.update([(name, temp)])
output: 输出:
>>> for d in names_dict:
>>> print d
'Frank': {'Jack': 0, 'Kevin': 0, 'Sam': 0}
'Sam': {'Frank': 0, 'Jack': 0, 'Kevin': 0}
'Kevin': {'Frank': 0, 'Jack': 0, 'Sam': 0}
'Jack': {'Frank': 0, 'Kevin': 0, 'Sam': 0}
names = ['Frank', 'Sam', 'Kevin', 'Jack']
d = {name: dict.fromkeys([x for x in names if x != name], 0)
for name in names}
from pprint import pprint
pprint(d)
{'Frank': {'Jack': 0, 'Kevin': 0, 'Sam': 0},
'Jack': {'Frank': 0, 'Kevin': 0, 'Sam': 0},
'Kevin': {'Frank': 0, 'Jack': 0, 'Sam': 0},
'Sam': {'Frank': 0, 'Jack': 0, 'Kevin': 0}}
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