没有NumPy的Python点积 [英] Dot Product in Python without NumPy

问题描述

有没有一种方法可以在不使用NumPy或Python中的Operation模块的情况下，对包含值的两个列表进行点积运算?这样代码就尽可能地简单?

Is there a way that you can preform a dot product of two lists that contain values without using NumPy or the Operation module in Python? So that the code is as simple as it could get?

例如:

V_1=[1,2,3]
V_2=[4,5,6]

Dot(V_1,V_2)

答案:32

推荐答案

没有numpy，您可以为使用zip和sum的点积编写函数.

Without numpy, you can write yourself a function for the dot product which uses zip and sum.

>>> def dot(v1, v2):
...     return sum(x*y for x,y in zip(v1,v2))
... 
>>> dot([1,2,3], [4,5,6])
32

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