如何从左到右解包元组? [英] How to unpack a tuple from left to right?

问题描述

是否有一种干净/简单的方法可以将右侧的 Python 元组从左到右解包?

Is there a clean/simple way to unpack a Python tuple on the right hand side from left to right?

例如

j = 1,2,3,4,5,6,7

(1,2,3,4,5,6,7)

v,b,n = j[4:7] 

我可以修改切片符号，使 v = j[6], b=j[5], n=j[4] 吗?

Can I modify the slice notation so that v = j[6], b=j[5], n=j[4] ?

我意识到我可以只订购左侧以获得所需的元素，但在某些情况下，我想我只想从左到右解压缩元组.

I realise I can just order the left side to get the desired element but there might be instances where I would just want to unpack the tuple from left to right I think.

推荐答案

如果您想保留原始索引(即不想费心将 4 和 7 更改为 6 和 3)，您还可以使用:

In case you want to keep the original indices (i.e. don't want to bother with changing 4 and 7 to 6 and 3) you can also use:

v, b, n = (j[4:7][::-1])

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