List into list

[ThomasL]

Have a look at this sample. I advise you work through a python tutorial to learn the basics.

def enter_sudoku(size):
    sudoku = []
    for i in range(size):
        row = [int(number) for number in list(input(f"Enter exactly {size} digits [1-9] without spaces: "))]
        sudoku.append(row)
    return sudoku


def show_sudoku(sudoku):
    for row in sudoku:
        for number in row:
            print(f"{number}", end=' ')
        print()

matrix = enter_sudoku(9)
show_sudoku(matrix)