create tik tak toe in python

main.py
# Function to print Tic Tac Toe
def printBoard(board):
    print("\n")
    for i in range(3):
        for j in range(3):
            print(board[i][j], end=" ")
        print("\n")

# Function to check if any player has won
def checkWinner(board):
    # check rows
    for i in range(3):
        if (board[i][0] == board[i][1] and board[i][1] == board[i][2]):
            if (board[i][0] == 'X'):
                return 'X'
            elif (board[i][0] == 'O'):
                return 'O'
            
    # check columns
    for j in range(3):
        if (board[0][j] == board[1][j] and board[1][j] == board[2][j]):
            if (board[0][j] == 'X'):
                return 'X'
            elif (board[0][j] == 'O'):
                return 'O'
    
    # check diagonals
    if (board[0][0] == board[1][1] and board[1][1] == board[2][2]):
        if (board[0][0] == 'X'):
            return 'X'
        elif (board[0][0] == 'O'):
            return 'O'
    
    if (board[0][2] == board[1][1] and board[1][1] == board[2][0]):
        if (board[0][2] == 'X'):
            return 'X'
        elif (board[0][2] == 'O'):
            return 'O'

    # if nobody wins return None
    return None

# Function to play Tic Tac Toe
def playTicTacToe():
    # initialize board
    board = [['-' for j in range(3)] for i in range(3)]
    
    # initialize player and turn
    player = 'X'
    turn = 1
    printBoard(board)

    # loop until the game is over
    while(turn<=9):
        print()
        print(f"Player {player} turn: ")
        
        # get the user input
        try:
            row = int(input("Enter row number(0-2): "))
            col = int(input("Enter column number(0-2): "))
        except:
            print("Invalid input")
            continue
        
        # check if cell is not already occupied
        if(board[row][col] != '-'):
            print("Cell is already occupied")
            continue
        
        # mark the cell with player's symbol
        board[row][col] = player
        printBoard(board)
        # check if the current player wins
        if(checkWinner(board) == player):
            print(f"Player {player} wins the game")
            return
        
        # switch players for next turn
        if(player == 'X'):
            player = 'O'
        else:
            player = 'X'
        
        turn += 1
      
    print("Game is a tie")

playTicTacToe()
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