Tic-Tac-Toe Milestone Project coded in Python.

tic_tac_toe.py

def display_board(board):
    """Display the tic-tac-toe board"""
    print("\n ---+---+---")
    print("  " + board[1] + ' | ' + board[2] + ' | ' + board[3])
    print(" ---+---+---")
    print("  " + board[4] + ' | ' + board[5] + ' | ' + board[6])
    print(" ---+---+---")
    print("  " + board[7] + ' | ' + board[8] + ' | ' + board[9])
    print(" ---+---+---")


def get_valid_position(player_name, board):
    """Get a valid position from the player with full validation"""
    while True:
        try:
            position = int(input(f"\n{player_name}, choose a position from 1-9: "))
            
            # Check if number is in valid range
            if position not in range(1, 10):
                print("Choose a position from 1-9")
                continue
            
            # Check if position is already taken
            if board[position] in ['X', 'O']:
                print("That position is already taken! Choose another.")
                continue
                
            # If we get here, the input is valid
            return position
            
        except ValueError:
            print("Enter a number from 1-9")

def check_winner(board):
    """Checks for diagonal,horizonatal and vertical wins"""
        # Rows(positions 1-2-3, 4-5-6, 7-8-9)
    winning_combos = [
    [1, 2, 3], [4, 5, 6], [7, 8, 9],  # Rows
    [1, 4, 7], [2, 5, 8], [3, 6, 9],  # Columns  
    [1, 5, 9], [3, 5, 7]              # Diagonals
    ]
    
    for combo in winning_combos:
        if board[combo[0]] == board[combo[1]] == board[combo[2]] and board[combo[0]] in ['X', 'O']:
            return board[combo[0]]

    return None

def check_draw(board):
    """Checks for draw"""
    for i in range(1,10):
        if board[i] not in ['X', 'O']:
            return False
    return True


def init():
    """Get player symbol choices (X or O)"""
    print("This is Tic-Tac-Toe")
    
    while True:
        choice = input("Player 1, choose either O or X:\n").upper()
        if choice in ['O', 'X']:
            player_1 = choice
            player_2 = 'X' if choice == 'O' else 'O'
            print(f"Player 1 is: {player_1}")
            print(f"Player 2 is: {player_2}")
            return player_1, player_2
        else:
            print("Choose either O or X")

def main():
    # Initialize the board
    board = [None, '1', '2', '3', '4', '5', '6', '7', '8', '9']
    
    # Get player symbols
    player_1, player_2 = init()
    
    # Show initial board
    display_board(board)
    
    # Main game loop
    while True:
        # Player 1's turn
        position = get_valid_position("Player 1", board)
        board[position] = player_1
        display_board(board)
        winner = check_winner(board)
        if winner:
            print(f"{winner} wins!")
            break
        draw = check_draw(board)
        if draw:
            print("It's a draw!")
            break
        # Player 2's turn  
        position = get_valid_position("Player 2", board)
        board[position] = player_2
        display_board(board)
        winner = check_winner(board)
        if winner:
            print(f"{winner} wins!")
            break
        draw = check_draw(board)
        if draw:
            print("It's a draw!")
            break


# Run the game
if __name__ == "__main__":
    main()

use more for loops for example no hardcoding the print statements to show the board