无法从 function 正确返回 boolean 值

Question

I am a very new python learner and trying to make a tic tac toe game in python. With my current lines of code I am unable to return boolean values properly.

board = ['-', '-', '-',
         '-', '-', '-',
         '-', '-', '-']


def display_board():
    print(f"{board[0]} | {board[1]} | {board[2]}")
    print(f"{board[3]} | {board[4]} | {board[5]}")
    print(f"{board[6]} | {board[7]} | {board[8]}")


def win_checker():
    if board[0] and board[1] and board[2] == "X":
        print("Player X Won!")
        return False
    else:
        return True


game_running = win_checker()


def play_game():
    while game_running:
        player_move = int(input("Select from 1 - 9: "))
        board[player_move - 1] = "X"
        display_board()
        win_checker()
        player_move = int(input("Select from 1 - 9: "))
        board[player_move - 1] = "0"
        display_board()
        win_checker()


display_board()
play_game()

This only has a single winning position but I will add that later. The problem is that even after the board list has index 0 to index 2 as "X" the loop doesn't break/terminate but it still prints "Player X Won".

Answer 1

The win_checker function is working properly. It is returning the boolean values. But, you are not saving the returned boolean values to any variable.

Inside the while loop you have to save the returned value to a variable. Change your play_game function with this,

def play_game():
while game_running:
    player_move = int(input("Select from 1 - 9: "))
    board[player_move - 1] = "X"
    display_board()
    game_running = win_checker() # updated
    player_move = int(input("Select from 1 - 9: "))
    board[player_move - 1] = "0"
    display_board() 
    game_running = win_checker()# updated