在Python中的嵌套列表中循环

Question

Hello I am new in Python and what I am trying to do is to make a loop in a nested list to sum the elements 10 by 10 in the code below:

1.1

for i in range (n):
            for k in range (n):
                G[i] += (F[(n*i)+k])

and I am getting the error:

ValueError: operands could not be broadcast together with shapes (6,) (3,)

what I already did and worked was

1.2

for i in range (n):
    G[i]=F[n*i+0]+F[n*i+1]+F[n*i+2]+F[n*i+3]+F[n*i+4]+F[n*i+5]+F[n*i+6]+F[n*i+7]+F[n*i+8]+F[n*i+9]

So I am trying to do the loop to get the same as in 1.2 but I know i cant use the loop in 1.1 in python. How would I do that? Thanks a lot!

Answer 1

I am not sure of what you want to add. If it is a problem with the shape of the array, it should be

import numpy as np
n=10
t=[(0,0,0)]
F=np.array(t*n**2)
G=np.array(t*n)
for i in range (n):
    for k in range (n):
        G[i] += F[n*i+k]

Of course if t=[(0,0,0)], it sums up to zero