请用python写一个完整的可以跑起来的贪食蛇小游戏

这是一个贪食蛇小游戏的完整代码：

import turtle
import time
import random

# 设置窗口大小和标题
turtle.setup(width=600, height=600)
turtle.title("贪食蛇")

# 设置画笔的速度
turtle.speed(10)
turtle.hideturtle()

# 设置分数
score = 0

# 画边框
turtle.penup()
turtle.goto(-290, 290)
turtle.pendown()
for i in range(4):
    turtle.fd(580)
    turtle.left(90)

# 创建食物
food = turtle.Turtle()
food.color("red")
food.shape("circle")
food.penup()
food.goto(random.randint(-280, 280), random.randint(-280, 280))

# 创建蛇头
head = turtle.Turtle()
head.color("green")
head.shape("square")
head.penup()
head.goto(0, 100)
head.direction = "stop"

# 创建蛇身
segments = []

# 定义方向函数
def go_up():
    head.direction = "up"

def go_down():
    head.direction = "down"

def go_left():
    head.direction = "left"

def go_right():
    head.direction = "right"

# 绑定方向键
turtle.listen()
turtle.onkeypress(go_up, "Up")
turtle.onkeypress(go_down, "Down")
turtle.onkeypress(go_left, "Left")
turtle.onkeypress(go_right, "Right")

# 定义移动函数
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)

# 游戏主循环
while True:
    turtle.update()
    # 判断是否吃到食物
    if head.distance(food) < 20:
        # 移动食物
        x = random.randint(-280, 280)
        y = random.randint(-280, 280)
        food.goto(x, y)

        #