A basic Tic Tac Toe game using Python

tic_tac_toe.py

'''Plays tic tac toe until you want it to stop.'''

def print_board(board):
    '''
    Prints the board and a key for the moves.

            Parameters:
                board (list): The board of moves and empty spaces.
    '''
    print(f'\n {board[0]} | {board[1]} | {board[2]}     1 | 2 | 3 ')
    print("---+---+---   ---+---+---")
    print(f' {board[3]} | {board[4]} | {board[5]}     4 | 5 | 6 ')
    print("---+---+---   ---+---+---")
    print(f' {board[6]} | {board[7]} | {board[8]}     7 | 8 | 9 \n')

def play_game():
    '''Starts and manages the game.'''
    board = [' '] * 9
    current_player = "X"
    winner = False
    while not winner:
        print_board(board)
        print(f"It's {current_player}'s turn...")
        board = make_move(current_player, board)
        if check_win(board) or check_complete(board):
            winner = True
            game_wrapper('Would you like to play again? (y/n) ')
        if current_player == "X":
            current_player = "O"
        else:
            current_player = "X"

def make_move(player, board):
    '''
    Requests a valid move from the player.

            Parameters:
                player (str): The current player of the game (X or O).
                board (list): The current state of the game.
    '''
    move = None
    while not valid_move(board,move):
        move = input("Choose where you'd like to move. (1-9) ")
    board[int(move)-1] = player
    return board

def valid_move(board, move):
    '''
    Checks whether or not a player can make the specified move.

            Parameters:
                board (list):   The current state of the game.
                move (int):     The move being attempted, represented by a number.
    '''
    if move is None:
        return False
    if not move.isdigit() or int(move) > 9 or int(move) < 1 or not board[int(move)-1] == " ":
        print("That's not a valid move.")
        return False
    else:
        return True

def check_win(board):
    '''
    Checks whether or not there is a winner yet.

            Parameters:
                board (list): The current state of the game.
    '''
    if board[0] == board[1] == board[2] and board[0] is not " ":
        winner = board[0]
    elif board[3] == board[4] == board[5] and board[3] is not " ":
        winner = board[3]
    elif board[6] == board[7] == board[8] and board[6] is not " ":
        winner = board[6]
    elif board[0] == board[3] == board[6] and board[0] is not " ":
        winner = board[0]
    elif board[1] == board[4] == board[7] and board[1] is not " ":
        winner = board[1]
    elif board[2] == board[5] == board[8] and board[2] is not " ":
        winner = board[2]
    elif board[0] == board[4] == board[8] and board[0] is not " ":
        winner = board[0]
    elif board[2] == board[4] == board[6] and board[2] is not " ":
        winner = board[2]
    else:
        return False
    print_board(board)
    print("***********************")
    print(f"* {winner} has won the game! *")
    print("***********************")
    return True

def check_complete(board):
    '''
    Checks whether there are any valid moves left in the game.

            Parameters:
                board (list): The current state of the game.
    '''
    for box in board:
        if box is " ":
            return False
    else:
        print_board(board)
        print("There are no more moves! The game ends in a tie.")
        return True

def game_wrapper(question):
    '''
    Asks the user if they want to start a game.

            Parameters:
                question (str): The specific question to ask the user.
    '''
    answer = input(question)
    if answer == "y":
        play_game()
    else:
        exit

game_wrapper('Do you want to play a game (y/n)? ')