为什么Python中没有元组理解?

问题描述

众所周知，列表理解如

[i for i in [1, 2, 3, 4]]

并且有字典理解功能，例如

and there is dictionary comprehension, like

{i:j for i, j in {1: 'a', 2: 'b'}.items()}

但是

(i for i in (1, 2, 3))

将最终生成器中，而不是tuple理解中.为什么会这样?

will end up in a generator, not a tuple comprehension. Why is that?

我的猜测是tuple是不可变的，但这似乎不是答案.

My guess is that a tuple is immutable, but this does not seem to be the answer.

推荐答案

您可以使用生成器表达式:

You can use a generator expression:

tuple(i for i in (1, 2, 3))

但是，…生成器表达式已经使用了括号.

but parentheses were already taken for … generator expressions.

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