What is the pythonic way to calculate dot product?

Question

I have two lists, one is named as A, another is named as B. Each element in A is a triple, and each element in B is just an number. I would like to calculate the result defi

Answer 1

This might be repeated solution, however:

>>> u = [(1, 2, 3), (4, 5, 6)]
>>> v = [3, 7]

In plain Python:

>>> sum([x*y for (x, *x2), y in zip(u,v)])
31

Or using numpy (as described in user57368's answer) :

import numpy as np
>>> np.dot(np.array(u)[:,0], v)
31