如何通过索引从列表中删除元素 [英] How to remove an element from a list by index

问题描述

如何在Python中按索引从列表中删除元素?

我找到了list.remove方法，但是说我想删除最后一个元素，该怎么做?似乎默认的remove搜索列表，但是我不希望执行任何搜索.

解决方案

使用del并指定要删除的元素的索引:

>>> a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> del a[-1]
>>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8]

还支持切片:

>>> del a[2:4]
>>> a
[0, 1, 4, 5, 6, 7, 8, 9]

此处是本教程中的部分. >

How do I remove an element from a list by index in Python?

I found the list.remove method, but say I want to remove the last element, how do I do this? It seems like the default remove searches the list, but I don't want any search to be performed.

解决方案

Use del and specify the index of the element you want to delete:

>>> a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> del a[-1]
>>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8]

Also supports slices:

>>> del a[2:4]
>>> a
[0, 1, 4, 5, 6, 7, 8, 9]

Here is the section from the tutorial.

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