[英]Get every nth item in list inside of another list
I have a list that consists of another list of values id, start, finish, value. 我有一个列表,其中包含值id,开始,完成,值的另一个列表。 I am looking to get an array that is filled with just the values.
我正在寻找一个仅填充值的数组。 How can I do this in python?
如何在python中做到这一点?
Example list: 示例列表:
[[id, start, finish, value], [id, start, finish, value], [id], [start], [finish], [value]]
Want: 想:
[value, value, value]
>>> l=[[1,2,3,4],[5,6,7,8],[9,10,11,12]]
>>> x=[v[3] for v in l]
>>> x
[4, 8, 12]
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