Python的Turtle模块-圆故障？

我一直在尝试使用Python的海龟模块创建一个零和交叉游戏。我经常遇到的问题是，用来覆盖每个网格正方形的数字的白色圆圈（这样就可以在那里写上零和叉）不是每次程序运行时乌龟在同一个地方画的——它们在一个相似的地方，但有点跳跃，因此不再覆盖下面的字母。下面是我创建圆圈的代码部分：

def position_1(naught_cross): #each function contains the code to write its respective number in the correct place on the grid
    if naught_cross != "1": #i.e. when a 'o' or 'x' is submitted as an argument
        circle_drawer(-125,140) #calls function to draw circle in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(-115,130) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font)) #having the variable 'naught_cross' enables it to change between the grid number and a naught/cross
def position_2(naught_cross):
    if naught_cross != "2":
        circle_drawer(-15,140) #calls function to draw box in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(-5,130) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_3(naught_cross):
    if naught_cross != "3":
        circle_drawer(85,140) #calls function to draw box in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(95,130) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_4(naught_cross):
    if naught_cross != "4":
        circle_drawer(-125,40) #calls function to draw box in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(-115,30) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_5(naught_cross):
    if naught_cross != "5":
        circle_drawer(-15,40)
    t.penup()
    t.setpos(-5,30) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_6(naught_cross):
    if naught_cross != "6":
        circle_drawer(85,40)
    t.penup()
    t.setpos(95,30) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_7(naught_cross):
    if naught_cross != "7": 
        circle_drawer(-125,-60) #calls function to draw box in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(-115,-70) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_8(naught_cross):
    if naught_cross != "8":
        circle_drawer(-15,-60) #calls function to draw box in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(-5,-70) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))
def position_9(naught_cross):
    if naught_cross != "9":
        circle_drawer(85,-60) #calls function to draw box in square before text is typed so text can be cleared when naughts/crosses are inputted in the grid sqaures
    t.penup()
    t.setpos(95,-70) #sets the position of the turltle head in pixels
    font = ("Arial",30,"normal")
    t.write(naught_cross,font=(font))


def circle_drawer(x,y): #paramters are x,y coordinates (contain actual coords in arguments when called) if grid in which white box must be drawn
    t.ht() #hides turtle
    t.lt(90)
    t.setpos(x,y) #sets turtle in poosition according to values in arguments 
    t.fillcolor("white") #sets the colour as white
    t.begin_fill() #fills circle
    t.circle(30) #draws a circle of radius 30
    t.end_fill() #ends filling circle

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有人有什么想法来解决这个问题吗？

没有足够的代码来给出明确的答案，但我猜问题出在

circle\u drawer（）

函数的这一行：

t.lt(90)

首先，它是可疑的，因为它是唯一一行没有评论的！其次，我们真的不知道海龟在调用之前或之后是如何定向的，因为它取决于海龟在调用函数之前所做的旋转。我相信你真的想要：

t.setheading(0)

或者其他角度，而不是0（零）。这会在绘制和书写之前将海龟设置为一致的已知标题