从2D阵列Python制作字典? [英] Make Dictionary from 2D Array Python?
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问题描述
我有一个2D数组,如下所示.
I have a 2D array as follows.
[['FE0456143', '218.04'], ['FB1357448', '217.52'], ['FB1482960', '222.70'], ['FB1483107', '223.32'], ['FE0456556', '12429.67'], ['FE0456594', '213.71'], ['FB1483056', '218.86'], ['FE0456061', '12392.33'], ['FB1482479', '223.35']]
第一个元素是键,第二个元素是值.我尝试过:
The first element is the key while the second is the value. I have tried:
keys = zip(*data)[0]
vals = zip(*data)[1]
dic(zip(keys,vals))
但是,数组中的某些元素可能具有重复的键,而这些元素不对应于它们?我希望所有键都具有3个与之关联的值?
However some elements of the array may have duplicate keys, and the elements are not corresponding to them? I want all of the keys to have 3 values associated with it?
推荐答案
听起来像您想要 1对多
的映射.如果您将值设为列表
:
Sounds like you want a 1 to many
mapping. You can have this if you make your value a list
:
from collections import defaultdict
d = defaultdict(list)
for k, v in data:
d[k].append(v)
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