>>> matrix

Zjxat

>>> matrix = [{1,2,3},{4,5,6},{7,8,9},{10,11,12}]
>>> matrix
[{1, 2, 3}, {4, 5, 6}, {8, 9, 7}, {10, 11, 12}]

这是为什么？？？

逃兵

集合是无序的

Zjxat

逃兵 发表于 2021-8-17 14:59
集合是无序的

>>> matrix = [{1,2,3},{4,5,6},{8,9,7}]
>>> matrix
[{1, 2, 3}, {4, 5, 6}, {8, 9, 7}]
>>> matrix = [1,2,3,4,5,6,7,8,9]
>>> matrix
[1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> matrix = [7,8,9]
>>> matrix
[7, 8, 9]
>>> matrix = [{1,2,3},{7,8,9},{4,5,6}]
>>> matrix
[{1, 2, 3}, {8, 9, 7}, {4, 5, 6}]
>>> matrix = [{1,2,3},{9,8,7},{4,5,6}]
>>> matrix
[{1, 2, 3}, {8, 9, 7}, {4, 5, 6}]
>>>  那为什么只针对7,8,9？？好奇怪呀

逃兵

Zjxat 发表于 2021-8-18 14:50
>>> matrix = [{1,2,3},{4,5,6},{8,9,7}]
>>> matrix
[{1, 2, 3}, {4, 5, 6}, {8, 9, 7}]

显示顺序取决于不同版本的python，不同的操作系统，甚至不同的运行时刻

这个顺序没有实际意义

你在使用set的时候认为是无序就行了

zyg0697

里面应该使用[ ]的话应该就有序了