While my code seemed to run properly (no errors, returned "None"), but the problem was deemed incorrect with the message: Oops, try again. Your random_row function should take exactly one parameter. The only parameter was board (see below code).
from random import randint board =  for x in range(0, 5): board.append(["O"] * 5) def print_board(board): for row in board: print " ".join(row) # Add your code below! def random_row(board): return randint(0, len(board) - 1) def random_col(board): return randint(0, len(board) - 1) random_row = random_row(board) random_col = random_col(board)