saving arrays in a for loop python

Question

I have a code which is something like:

arr = [1,2]
spec = [4,10,5,45,78]
for i in range(len(arr)):
                       spec = spec/arr[i]

What I want to do, is save those two arrays I should get in the end, in two distinct arrays. Because then I don't only have an array of only 2 values, but more.

I want as output: to have two arrays, one: spec/arr[1] and the other: spec/arr[2]. but I want to store them in different arrays.

Answer 1

You can get a list of lists using a nested list comprehension:

[[s/a for s in spec] for a in arr]

Result: [[4.0, 10.0, 5.0, 45.0, 78.0], [2.0, 5.0, 2.5, 22.5, 39.0]]