#game starts
while True:
#select randomly the player.
turn = whoGoesFirst()
print(turn + ' will go first.')
gameIsPlaying = True
#loop until players are playing the game.
while gameIsPlaying:
if turn == 'player 1':
# Player 1's turn.
board.printBoard()
#Player inputs his/her move.
move = player1.getPlayerMove(board)
#Make Player 1 move.
player1.makeMove(move, board)
#Check if Player 1 has won.
if board.isWon(player1.symbol):
#Print board.
board.printBoard()
print('Hooray! Player 1 has won the game!')
gameIsPlaying = False
else: #Game is a tie.
if board.fullBoard():
board.printBoard()
print('The game is a tie!')
break
else:
turn = 'player 2'
else:
