def score_moves(self, board):
'''Score next moves for a board'''
scores = {}
depth = 9 - len(board.next_moves())
for pos in board.next_moves():
next_board = Board(board.state())
next_board.move(pos)
if next_board.winner() == board.X_WINS:
scores[pos] = 10 - depth
elif next_board.winner() == board.O_WINS:
scores[pos] = -10 + depth
elif next_board.winner() == board.TIE:
scores[pos] = 0
else:
score, _ = self.best_moves(next_board)
scores[pos] = score
return scores
def play_game(player1, player2):
'''Play a game with two robots'''
board = Board()
for turn in range(9):
player = player2 if (turn % 2) else player1
board.move(player.next_move(board))
if board.winner():
return board
