Add together elements up to certain index

Question

So I have an array

[1,2,3,4,5,6,7,8,9,10]

and I need to create a new array that adds together the first

5

elements then the next

5

elements, ect. so

1+2+3+4+5=15

,

6+7+8+9+10=40

[15,40]

. How would i go about doing this?

Answer 1

you can do something like :

>>> l1 =  [1,2,3,4,5,6,7,8,9,10]
>>> l2= [sum(l[n:n+5]) for n in range(0, len(l), 5)]
>>> l2
[15, 40]

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