# Initialize the board as a list of 9 empty strings
board = [" " for _ in range(9)]
def print_board():
"""Prints the current state of the Tic-Tac-Toe board."""
print(f"| {board[0]} | {board[1]} | {board[2]} |")
print("-------------")
print(f"| {board[3]} | {board[4]} | {board[5]} |")
print("-------------")
print(f"| {board[6]} | {board[7]} | {board[8]} |")
def player_move(player_char):
"""Allows a player to make a move."""
while True:
try:
move = int(input(f"Player {player_char}, enter your move (1-9): ")) - 1
if 0 <= move <= 8 and board[move] == " ":
board[move] = player_char
break
else:
print("Invalid move. That spot is either taken or out of bounds. Try again.")
except ValueError:
print("Invalid input. Please enter a number between 1 and 9.")
def check_win(player_char):
"""Checks if the given player has won."""
winning_combinations = [
(0, 1, 2), (3, 4, 5), (6, 7, 8), # Rows
(0, 3, 6), (1, 4, 7), (2, 5, 8), # Columns
(0, 4, 8), (2, 4, 6) # Diagonals
]
for combo in winning_combinations:
if board[combo[0]] == board[combo[1]] == board[combo[2]] == player_char:
return True
return False
def check_tie():
"""Checks if the game is a tie (board is full and no winner)."""
return " " not in board
def play_game():
"""Manages the main game loop."""
current_player = "X"
game_over = False
while not game_over:
print_board()
player_move(current_player)
if check_win(current_player):
print_board()
print(f"Player {current_player} wins!")
game_over = True
elif check_tie():
print_board()
print("It's a tie!")
game_over = True
else:
current_player = "O" if current_player == "X" else "X"
# Start the game
if __name__ == "__main__":
play_game()
Explanation:
board list: Represents the 3x3 Tic-Tac-Toe board. Each element corresponds to a cell,
initialized with a space (" ").
print_board(): Displays the current state of the board in a readable format.
player_move(player_char): Prompts the current player to enter their move (a number from
1 to 9). It validates the input to ensure it's a valid, empty cell before placing the player's
character.
check_win(player_char): Defines all possible winning combinations and checks if the
given player_char occupies any of these combinations.
check_tie(): Determines if the board is full, indicating a tie if no player has won.
play_game(): This is the main function that orchestrates the game flow:
o It initializes the current_player to "X".
o It enters a while loop that continues until game_over is True.
o Inside the loop, it prints the board, gets the current player's move, checks for a win or tie,
and then switches the current_player.
if __name__ == "__main__":: Ensures that play_game() is called only when the script is
executed directly.
