如何从Python列表中构造矩阵? [英] how to construct a matrix from lists in Python?

问题描述

我是Python的新手，我的问题是如何从一些列表中构建矩阵?例如，如果我有列表:

I'm new to Python and my problem is how to construct a matrix from some lists? For example if i have lists:

[388.625, 174.125, 157.25, 166.375]
[432.25, 606.125, 326.25, 202.75]
[383.5, 718.25, 630., 284.]
[487.375, 299.125, 438.125, 432.5]

我如何加入他们以创建矩阵?

How can i join them to create a matrix?

推荐答案

假设矩阵"是指二维numpy数组，

Assuming that by "matrix" you mean a 2-D numpy array,

import numpy
matrix = numpy.array(list_of_lists)

会这样做，如果在list_of_lists中，请猜猜是什么，数字列表的列表.

will do it, if in list_of_lists you have, guess what!, the list of lists of numbers.

如果您拥有的是例如四个单独的列表，则四个数字中的每个数字分别命名为a，b，c和d，实际上并不是所有列表都包含在内这么难...

If what you have is, e.g, four separate lists, each of four numbers, named a, b, c and d, making a list of lists out of them isn't really all that hard...:

matrix = numpy.array([a, b, c, d])

依此类推，具体取决于您的意思是从某些列表构造矩阵"！-)

and so forth, depending exactly on what you mean by "construct a matrix from some lists"!-)

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