we have 3 lists in below
[2,3,4] [5,6,7] [8,9,10]
so , how we can sum all of similar index in lists together? i mean is 2 and 5 and 8 be sum together & 3 and 6 and 9 also be sum together & 4 and 7 and 10 as well ? but just use lambda and map…
actually i have no idea for that and this code is just for sending this question
x=[ [5,8,1], [9,4,7], [2,6,3], ] print(list(map(lambda x : x[1], x)))
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Answer
to get them all together use zip
:
new = list((zip(*matrix)))
output:
[(2, 5, 8), (3, 6, 9), (4, 7, 10)]
to sum them up you can use sum
and map
:
sum = list(map(sum, zip(*matrix)))
output:
[15, 18, 21]