Q.how to add in get winner code? get winner code error

import random

import os

os.environ['PYTHONUNBUFFERED'] = '1'

def create_board(size):

"""Create a new game board with the specified size."""

board = []

for row in range(size):

board.append(['-'] * size)

return board

def print_board(board):

"""Print the current game board."""

size = len(board)

print(' ', end='')

for col in range(size):

print(col, end=' ')

print()

for row in range(size):

print(row, end=' ')

for col in range(size):

print(board[row][col], end=' ')

print()

def get_player_names():

"""Prompt the user for the names of the two players."""

player1 = input('Enter player 1 name: ')

player2 = input('Enter player 2 name: ')

return player1, player2

def get_board_size():

"""Prompt the user for the size of the game board."""

while True:

size = int(input('Size of game board: '))

if size % 2 == 0 or size < 3:

print('Invalid size! Please enter an odd number that is at least 3.')

else:

return size

def get_random_player():

"""Randomly choose which player goes first."""

return random.choice(['X', 'O'])

def get_tile_coordinates(board, player):

"""Prompt the user for the coordinates of the next tile to place."""

while True:

coordinates = input(player + ', place your ' + player + ' tile: ')

try:

row1, col1, row2, col2 = [int(c) for c in coordinates]

except:

print('Wrong input format! Please enter two pairs of row and column numbers separated by spaces.')

continue

if not (0 <= row1 < len(board) and 0 <= col1 < len(board) and 0 <= row2 < len(board) and 0 <= col2 < len(board)):

print('Invalid coordinates! Please enter two pairs of row and column numbers within the board.')

continue

if board[row1][col1] != '-' or board[row2][col2] != '-':

print('Square occupied!! Please re-enter.')

continue

if not ((row1 == row2 and abs(col1 - col2) == 1) or (col1 == col2 and abs(row1 - row2) == 1)):

print('Invalid tiles!! Please re-enter.')

continue

return row1, col1, row2, col2

def play_game():

"""Play a single game of XO domino-tile."""

player1, player2 = get_player_names()

size = get_board_size()

board = create_board(size)

current_player = get_random_player()

while True:

print_board(board)

row1, col1, row2, col2 = get_tile_coordinates(board, current_player)

board[row1][col1] = current_player

board[row2][col2] = current_player

if not is_possible_move(board):

break

current_player = 'X' if current_player == 'O' else 'O'

print_board(board)

winner = get_winner(board)

if winner is None:

print("It's a tie!! Rematch...")

play_game()

else:

print(winner + ' is the winner!!')

def is_possible_move(board):

"""Check if there is at least one possible move left on the board."""

for row in range(len(board)):

for col in range(len(board)):

if board[row][col] == '-':

# Check if there is an adjacent tile of the same symbol

if (row > 0 and board[row-1][col] == board[row][col]) \

or (col > 0 and board[row][col-1] == board[row][col]) \

or (row < len(board)-1 and board[row+1][col] == board[row][col]) \

or (col < len(board)-1 and board[row][col+1] == board[row][col]):

return True

return False