如何执行两个列表的按元素相乘? [英] How to perform element-wise multiplication of two lists?

问题描述

我想执行元素明智的乘法，以将两个列表按值在Python中相乘，就像我们在Matlab中可以做到的那样.

I want to perform an element wise multiplication, to multiply two lists together by value in Python, like we can do it in Matlab.

这就是我在Matlab中要做的事情.

This is how I would do it in Matlab.

a = [1,2,3,4]
b = [2,3,4,5]
a .* b = [2, 6, 12, 20]

对于a中x的x * y和b中y的每个组合，列表理解将给出16个列表条目.不确定如何映射.

A list comprehension would give 16 list entries, for every combination x * y of x from a and y from b. Unsure of how to map this.

如果有人对为什么感兴趣，我有一个数据集，并想将其乘以Numpy.linspace(1.0, 0.5, num=len(dataset)) =).

If anyone is interested why, I have a dataset, and want to multiply it by Numpy.linspace(1.0, 0.5, num=len(dataset)) =).

推荐答案

使用列表理解和zip():.

[a*b for a,b in zip(lista,listb)]

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