此问题在此处已有答案：

How can I read inputs as numbers?（10个答案）
11小时前关门了。
我现在正在学习Python，并尝试自己做井字游戏。我已经写了这些代码，但我不知道我的逻辑有什么问题。

def player_choice(board):  #this function asks for the players next position
    i= 0
    if full_board_check(board):
        print ("All the positions have been filled, the game is over")
        
    while i not in [1,2,3,4,5,6,7,8,9] or board[i]=='X' or board[i]=='Y':  
         i=input('Please choose a number')
    return i

与此相反，这被认为是正确的：

def player_choice(board):    
    position = 0    
    while poistion not in [1,2,3,4,5,6,7,8,9] or not space_check(board,position):
        position=int(input("Please choose a valid position"))
    return position