How to create lists of 3x3 sudoku block in python

Question

I need help creating a list for each of the 9 3x3 blocks in sudoku. so I have a list of lists representing the original sudoku board (zero means empty):

board=[[         


        

Answer 1

should work, in python3 you might replace "(m/3)*3" with "int(m/3)*3"

[[board[(m/3)*3+i][(m%3)*3+j] for i in range(3) for j in range(3)] for m in range(9)]