How to print %2, even numbers from lists in list?

Question

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

I want to do something like:

r[1] for r in m if r[1]℅2==0

Answer 1

[[j for j in i if j % 2 == 0] for i in m]

Answer 2

Ok, but why it prints empty window?

Answer 3

Because the list wasn't printed.

Answer 4

True :) thx