(Python3) how to replace elements in a list?

Question

Python

There is a list with random numbers

n = 5
row = np.random.randint(1, 10, n)

you need to change the elements in it,
if paired then by 2-i^2 #i - number in order.
unpaired by 12
I will be grateful for any information.

Answer 1

row = [2-i^2 if row[i]%2 == 0 else 12 for i in range(n)]