# Exercise 27 - Tic Tac Toe Draw

def end_of_game ( game ):
    full_set = set()
    for i in range(len(game)):
        full_set.update(game[i])
    return full_set == {"X", "O"}

def ask_move():
    move_str = input("Player "+str(player)+", please enter Your move (row,col): ")
    move = move_str.split(",")
    moveX = int(move[0].strip())-1
    moveY = int(move[1].strip())-1
    return [moveX,moveY]

def play ( game, symbol, X, Y ):
    if game[X][Y] == 0:
        game[X][Y] = symbol
    else:
        print("This move has been played already.")
        move = ask_move()
        play(game,symbol,move[0],move[1])

def next_player ( player ):
    list_of_players = list(players)
    current = list_of_players.index(player)
    if len(list_of_players[current:]) == 1:
        return list_of_players[0]
    else:
        return list_of_players[current+1]


if __name__ == "__main__":
    game = [[0, 0, 0],
            [0, 0, 0],
            [0, 0, 0]]
    players = {1: "X", 2: "O"}
    player = 1
    while not end_of_game(game):
        move = ask_move()
        play(game,players[player],move[0],move[1])
        print(game)
        player = next_player(player)
    print("End of game.")