仅从列表中检索非重复元素 [英] Retrieve only non-duplicate elements from a list

问题描述

从 Python 列表中仅检索非重复元素的最佳选择是什么?假设我有以下列表:

lst = [1, 2, 3, 2, 3, 4]

我想检索以下内容:

lst = [1, 4]

(2 和 3 在该列表中不是唯一的，因此它们不会被检索到)

解决方案

使用 列表理解:

<预><代码>>>>lst = [1, 2, 3, 2, 3, 4]>>>[x for x in lst if lst.count(x) == 1][1, 4]>>>

另外，我建议你不要命名一个变量list——它掩盖了内置变量.

What is the best option to retrieve only non-duplicate elements from a Python list? Say I have the following list:

lst = [1, 2, 3, 2, 3, 4]

I would like to retrieve the following:

lst = [1, 4]

(2 and 3 are not unique in that list, so they don't get retrieved)

解决方案

This is a breeze with a list comprehension:

>>> lst = [1, 2, 3, 2, 3, 4]
>>> [x for x in lst if lst.count(x) == 1]
[1, 4]
>>>

Also, I recommend that you do not name a variable list--it overshadows the built-in.

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