本文实例讲述了Python列表list排列组合操作。分享给大家供大家参考，具体如下：
排列
例如：
输入为
['1','2','3']和3
输出为
['111','112','113','121','122','123','131','132','133','211','212','213','221','222','223','231','232','233','311','312','313','321','322','323','331','332','333']
实现代码：
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# -*- coding:utf-8 -*-#! pyhton2from itertools import productl = [1, 2, 3]print list(product(l, l))print list(product(l, repeat=3)) |
上述代码运行输出：
[(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 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)]
组合
例如：
输入为
[1, 2, 3]和2
输出为
[1, 2], [1, 3], [2, 3] 不考虑顺序
实现代码：
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# -*- coding:utf-8 -*-#! pyhton2from itertools import combinationsl = [1, 2, 3, 4, 5]print list(combinations(l, 3)) |
上述代码运行输出：
[(1, 2, 3), (1, 2, 4), (1, 2, 5), (1, 3, 4), (1, 3, 5), (1, 4, 5), (2, 3, 4), (2, 3, 5), (2, 4, 5), (3, 4, 5)]
希望本文所述对大家Python程序设计有所帮助。
原文链接：https://blog.csdn.net/vitaminc4/article/details/78922612
