如何在Python中创建N元组? [英] How to create N-tuples in Python?

问题描述

在Python中创建n元组列表的最简单方法是什么?

What would be the easiest way to create a list of n-tuples in Python?

例如，如果我要创建数字n(例如3):

For example, if I want to create for a number n (for e.g. 3):

我想生成以下一组元组:

I'd want to generate the following set of tuples:

(1,1,1) (1,1,2) (1,1,3) (2,1,1) (2,1,2) (2,1,3) (3,1,1) (3,1,2) (3,1,3)  
(1,2,1) (1,2,2) (1,2,3) (2,2,1) (2,2,2) (2,2,3) (3,2,1) (3,2,2) (3,2,3)  
(1,3,1) (1,3,2) (1,3,3) (2,3,1) (2,3,2) (2,3,3) (3,3,1) (3,3,2) (3,3,3) 

推荐答案

使用 itertools.product :

>>> from itertools import product
>>> list(product(range(1, 4), repeat=3))
[(1, 1, 1), (1, 1, 2), (1, 1, 3), (1, 2, 1), (1, 2, 2), (1, 2, 3), (1, 3, 1), (1, 3, 2), (1, 3, 3), (2, 1, 1), (2, 1, 2), (2, 1, 3), (2, 2, 1), (2, 2, 2), (2, 2, 3), (2, 3, 1), (2, 3, 2), (2, 3, 3), (3, 1, 1), (3, 1, 2), (3, 1, 3), (3, 2, 1), (3, 2, 2), (3, 2, 3), (3, 3, 1), (3, 3, 2), (3, 3, 3)]

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