[英]How do you extract till the second last element from each sub-list in a nested list?
How do you extract till the second last element from each sub-list in a nested list?如何从嵌套列表中的每个子列表中提取直到倒数第二个元素?
x = [[1, 2, 3], [4, 5], [7, 8, 9], [1, 3, 5, 6, 8]]
The desired output is:所需的 output 是:
y = [[1, 2], [4], [7, 8], [1, 3, 5, 6]]
You can use the following method to do this:您可以使用以下方法来执行此操作:
x = [[1, 2, 3], [4, 5], [7, 8, 9], [1, 3, 5, 6, 8]]
y = [sublist[:-1] for sublist in x]
output: output:
[[1, 2], [4], [7, 8], [1, 3, 5, 6]]
You can try this:你可以试试这个:
y = [ar[:-1] for ar in x]
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