Python编写贪吃蛇游戏调用turtle.update()触发Terminator错误如何解决

turtle.Terminator报错本质是窗口销毁后依然在调用turtle相关的更新方法，除此之外你的代码还存在多处语法、逻辑错误，具体问题如下：

• 未初始化high_score变量，首次吃到食物判断得分时会直接报错
• 边界碰撞处理时，遍历身体段的代码写错了调用对象：segments.goto(1000,1000) 应该改为单个segment.goto(1000,1000)，列表没有goto方法
• 自碰撞处理时，清空身体段的代码写错：segment.clear() 应该改为segments.clear()，错误调用了单段对象的方法清空列表
• 主循环逻辑缩进错误：身体段位置跟随、蛇头移动、自碰撞检测的代码全部缩进在了「吃到食物」的判断分支内，只有吃到食物蛇才会移动，逻辑完全错误
• 方向变量大小写不一致：初始方向是小写"stop"，碰撞后赋值为大写"Stop"，导致移动函数无法正确识别停止状态
• 没有补充吃到食物后重置食物位置的逻辑，食物会一直停在原地
• 无限while True循环没有处理窗口关闭事件，手动关闭窗口后循环还在执行wn.update()，触发Terminator异常

import turtle
import time
import random

delay = 0.1
score = 0
high_score = 0  # 初始化最高分变量

wn = turtle.Screen()
wn.title("Snake Game")
wn.bgcolor("blue")

wn.setup(width=600 ,height=600)
wn.tracer(0)

# 蛇头
head = turtle.Turtle()
head.shape("square")
head.color("white")
head.penup()
head.goto(0,0)
head.direction = "stop"
# 食物
food = turtle.Turtle()
colors = random.choice(['red','green','black'])
shapes = random.choice(['square','triangle','circle'])
food.speed(0)
food.shape(shapes)
food.color(colors)
food.penup()
food.goto(0,100)

# 得分面板
pen = turtle.Turtle()
pen.speed(0)
pen.shape("square")
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0,250)
pen.write("Score : 0 High Score : 0",align="center",font=("candara",24,"bold"))


def goup():
    if head.direction !="down":
        head.direction = "up"

def godown():
    if head.direction !="up":
        head.direction ="down"

def goleft():
    if head.direction !="right":
        head.direction ="left"

def goright():
    if head.direction !="left":
        head.direction ="right"

def move():
    if head.direction == "up":
        y=head.ycor()
        head.sety(y+20)
    if head.direction == "down":
        y = head.ycor()
        head.sety(y-20)
    if head.direction == "left":
        x = head.xcor()
        head.setx(x-20)
    if head.direction == "right":
        x = head.xcor()
        head.setx(x+20)


wn.listen()
wn.onkeypress(goup,"w")
wn.onkeypress(godown,"s")
wn.onkeypress(goleft,"a")
wn.onkeypress(goright,"d")

segments = []

# 主游戏循环，增加异常捕获处理窗口关闭
try:
    while True:
        wn.update()
        # 边界碰撞检测
        if head.xcor()>290 or head.xcor()<-290 or head.ycor()>290 or head.ycor()<-290:
            time.sleep(1)
            head.goto(0,0)
            head.direction = "stop" # 统一方向变量小写
            for segment in segments:
                segment.goto(1000,1000) # 修改为单个segment调用方法
            segments.clear()
            score = 0
            delay = 0.1
            pen.clear()
            pen.write(f"Score : {score} High Score : {high_score}",align="center",font=("candara",24,"bold"))
        
        # 吃到食物检测
        if head.distance(food)<20:
            x = random.randint(-270,270)
            y = random.randint(-270,270)
            food.goto(x,y) # 重置食物位置

            # 添加身体段
            new_segment = turtle.Turtle()
            new_segment.speed(0)
            new_segment.shape("square")
            new_segment.color("orange")
            new_segment.penup()
            segments.append(new_segment)
            delay -= 0.001
            score += 10
            if score > high_score:
                high_score = score
            pen.clear()
            pen.write(f"Score : {score} High Score : {high_score} ",align="center", font=("candara",24,"bold"))
        
        # 身体段位置跟随
        for index in range(len(segments)-1,0,-1):
            x = segments[index-1].xcor()
            y = segments[index-1].ycor()
            segments[index].goto(x,y)
        if len(segments) > 0:
            x = head.xcor()
            y = head.ycor()
            segments[0].goto(x,y)
        
        move() # 移动蛇头
        
        # 自碰撞检测
        for segment in segments:
            if segment.distance(head) < 20:
                time.sleep(1)
                head.goto(0,0)
                head.direction = "stop" # 统一方向变量小写
                for segment in segments:
                    segment.goto(1000,1000)
                segments.clear() # 清空身体段列表

                score = 0 
                delay = 0.1
                pen.clear()
                pen.write(f"Score : {score} High Score : {high_score} ",align="center", font=("candara",24,"bold"))
        time.sleep(delay)
except turtle.Terminator:
    # 捕获窗口关闭的异常，正常退出程序
    pass

内容的提问来源于stack exchange，提问作者TobiDzN