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最近在学随机过程，中间要计算矩阵，矩阵相乘太麻烦了，所以想用编程实现，也顺便练下手。基本功能已经实现，但是只能自己在程序里事先把数组输进去，所以想问一下怎样才可以通过input函数直接过去矩阵。
看了网上其他人的办法，都是这样的输入>>1 2 3 4 5
>>1 2 3 4 5
通过是split(' ')来获取得到['1','2','3''4','5']
但是我想要的是这样的的效果，这样感觉美观一些。输入：>>[ [1,2,3],[1,2,3] ]
>>[ [1,2,3],[1,2,3] ]
先谢谢啦
认证高级PHP讲师
A comparisonis not safebut the immediate solution to the problem is:
matrix = input(">>") matrix = eval(matrix) print(matrix)
Result:
>>[ [1,2,3], [1,2,3] ] [[1, 2, 3], [1, 2, 3]]
P.S. You can consider using a file to input
For example:
matrix a 1 2 3 1 2 3
Supplement: If you want to use a ready-made library to process matrices in Python, numpy is a good choice.
Isn’t it best to use Matlab to calculate matrices?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
A comparisonis not safebut the immediate solution to the problem is:
Result:
P.S. You can consider using a file to input
For example:
Supplement: If you want to use a ready-made library to process matrices in Python, numpy is a good choice.
Isn’t it best to use Matlab to calculate matrices?