Question

我刚刚开始编码，我正在尝试用Python 3制作一个Tic Tac Toe程序。这是我尝试过的最大的项目，我似乎做得很好，但我遇到了一个我无法弄清楚的问题。

我的电路板编号为1到9.当我使用参数move1和user1运行此功能时，它应该将电路板上的相应位置更改为用户的字符X或O.

print("Player 1 goes first. Select your square")
move1 = input("> ")

def new_move(number_of_moves, user):
    if number_of_moves == '1':
        square1 = user
    if number_of_moves == '2':
        square2 = user
    if number_of_moves == '3':
        square3 = user
    if number_of_moves == '4':
        square4 = user
    if number_of_moves == '5':
        square5 = user
    if number_of_moves == '6':
        square6 = user
    if number_of_moves == '7':
        square7 = user
    if number_of_moves == '8':
        square8 = user
    if number_of_moves == '9':
        square9 = user

new_move(move1, user1)
tictactoe()

但是，当我运行该功能时，它不会将相应方块的值更改为用户的角色。它根本不会改变任何东西。我一直在墙上敲我的头试图弄清楚为什么无济于事。就像我说的那样，我对此非常陌生，所以任何帮助都会受到赞赏。谢谢！

Answer 1

因为square#中的new_move被视为本地变量。

局部变量仅存在于new_move函数中。它不在函数外部引用。

您可以通过将它们设为全局来更改它。

def new_move(number_of_moves, user):
    global square1, square2, square3, square4, square5, square6, square7, square8, square9
    if number_of_moves == '1':
        square1 = user
    if number_of_moves == '2':
        square2 = user
    if number_of_moves == '3':
        square3 = user
    if number_of_moves == '4':
        square4 = user
    if number_of_moves == '5':
        square5 = user
    if number_of_moves == '6':
        square6 = user
    if number_of_moves == '7':
        square7 = user
    if number_of_moves == '8':
        square8 = user
    if number_of_moves == '9':
        square9 = user

实际上，我不推荐这个，但它会起作用。

有关详细信息，请参阅 Using global variables in a function other than the one that created them

Answer 2

Naetmul的例子是正确的，但我建议你减少你的代码。为此，我使用了一个列表。

targetSDKVersion

无论如何，我在列表中将0作为默认值，因为我不知道变量是什么print("Player 1 goes first. Select your square") move1 = input("> ") squares = [0,0,0,0,0,0,0,0,0] # Use a list to reduce the size of your code. def new_move(square, user): if square.isdigit(): try: squares[square-1] = user except: print("Incorrect value.") else: print("Incorrect value.") new_move(move1, user1) tictactoe();）

我无法找到为什么这个功能不起作用[Python 3]

2 个答案: