MATLAB 元胞数组的 Numpy 等效项 [英] Numpy equivalent of MATLAB's cell array

问题描述

我想在 Numpy 中创建一个类似 MATLAB 的元胞数组.我怎样才能做到这一点?

I want to create a MATLAB-like cell array in Numpy. How can I accomplish this?

推荐答案

Matlab 元胞数组 与 Python 列表最相似，因为它们可以保存任何对象 - 但 scipy.io.loadmat 将它们导入为 numpy 对象数组 - 这是一个带有 dtype=object 的数组.

Matlab cell arrays are most similar to Python lists, since they can hold any object - but scipy.io.loadmat imports them as numpy object arrays - which is an array with dtype=object.

老实说，虽然您使用 Python 列表也很不错 - 如果您持有一般对象，您将失去 numpy 数组的几乎所有优点(它们旨在保存一系列值，每个值都取相同的数量内存).

To be honest though you are just as well off using Python lists - if you are holding general objects you will loose almost all of the advantages of numpy arrays (which are designed to hold a sequence of values which each take the same amount of memory).

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