生成一个python贪吃蛇代码

好的，以下是一个简单的Python贪吃蛇游戏代码：

import turtle
import random

# 设置窗口大小
WIDTH = 500
HEIGHT = 500
turtle.setup(WIDTH, HEIGHT)

# 设置蛇的初始位置和方向
START_X, START_Y = 0, 0
START_DIRECTION = "right"

# 设置食物的初始位置
FOOD_X = random.randint(-WIDTH/2+10, WIDTH/2-10)
FOOD_Y = random.randint(-HEIGHT/2+10, HEIGHT/2-10)

# 创建蛇的头
head = turtle.Turtle()
head.penup()
head.goto(START_X, START_Y)
head.direction = START_DIRECTION

# 创建食物
food = turtle.Turtle()
food.penup()
food.shape("circle")
food.color("red")
food.goto(FOOD_X, FOOD_Y)

# 创建蛇的身体
segments = []

# 移动蛇的函数
def move():
    if head.direction == "up":
        y = head.ycor()
        head.sety(y + 20)
    elif head.direction == "down":
        y = head.ycor()
        head.sety(y - 20)
    elif head.direction == "right":
        x = head.xcor()
        head.setx(x + 20)
    elif head.direction == "left":
        x = head.xcor()
        head.setx(x - 20)

# 改变蛇的方向
def go_up():
    if head.direction != "down":
        head.direction = "up"

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

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

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

# 监听键盘事件
turtle.listen()
turtle.onkey(go_up, "Up")
turtle.onkey(go_down, "Down")
turtle.onkey(go_right, "Right")
turtle.onkey(go_left, "Left")

# 设置游戏循环
while True:
    turtle.update()

    # 判断蛇是否吃到食物
    if head.distance(food) < 20:
        # 更新食物的位置
        FOOD_X = random.randint(-WIDTH/2+10, WIDTH/2-10)
        FOOD_Y = random.randint(-HEIGHT/2+10, HEIGHT/2-10)
        food.goto(FOOD_X, FOOD_Y)

        # 增加蛇的身体
        segment = turtle.Turtle()
        segment.penup()
        segment.shape("square")
        segment.color("white")
        segments.append(segment)

    # 移动蛇的身体
    for i in range(len(segments)-1, 0, -1):
        x = segments[i-1].xcor()
        y = segments[i-1].ycor()
        segments[i].goto(x, y)

    # 移动蛇的头
    move()

    # 判断蛇是否撞墙或自己
    if head.xcor() > WIDTH/2 or head.xcor() < -WIDTH/2 or head.ycor() > HEIGHT/2 or head.ycor() < -HEIGHT/2:
        turtle.goto(0, 0)
        turtle.write("Game Over", align="center", font=("Arial", 24, "normal"))
        break

    for segment in segments:
        if segment.distance(head) < 20:
            turtle.goto(0, 0)
            turtle.write("Game Over", align="center", font=("Arial", 24, "normal"))
            break

这段代码使用了 Python 自带的 turtle 模块来绘制游戏界面，通过监听键盘事件来改变蛇的方向，使用碰撞检测来判断蛇是否吃到食物或撞墙自杀，实现了一个简单的贪吃蛇游戏。