用python写一个贪吃蛇游戏

好的，我可以提供一个简单的贪吃蛇游戏示例，使用Python和turtle库编写。以下是代码：

import turtle
import time
import random

delay = 0.1

# 设置窗口
wn = turtle.Screen()
wn.title("贪吃蛇小游戏")
wn.bgcolor("green")
wn.setup(width=600, height=600)
wn.tracer(0)

# 蛇头
head = turtle.Turtle()
head.speed(0)
head.shape("square")
head.color("black")
head.penup()
head.goto(0, 0)
head.direction = "stop"

# 食物
food = turtle.Turtle()
food.speed(0)
food.shape("circle")
food.color("red")
food.penup()
food.goto(0, 100)

# 蛇身列表
segments = []

# 记分板
score = 0
high_score = 0
pen = turtle.Turtle()
pen.speed(0)
pen.shape("square")
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0, 260)
pen.write("得分: 0  最高分: 0", align="center", font=("Courier", 24, "normal"))

# 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 == "right":
        x = head.xcor()
        head.setx(x + 20)

    if head.direction == "left":
        x = head.xcor()
        head.setx(x - 20)

# 改变方向函数
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
wn.listen()
wn.onkeypress(go_up, "Up")
wn.onkeypress(go_down, "Down")
wn.onkeypress(go_right, "Right")
wn.onkeypress(go_left, "Left")

# 循环游戏
while True:
    wn.update()

    # 碰到边界判断
    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"

        # 隐藏蛇身
        for segment in segments:
            segment.goto(1000, 1000)

        # 清空蛇身列表
        segments.clear()

        # 重置分数
        score = 0
        pen.clear()
        pen.write("得分: {}  最高分: {}".format(score, high_score), align="center", font=("Courier", 24, "normal"))

    # 碰到食物判断
    if head.distance(food) < 20:
        x = random.randint(-290, 290)
        y = random.randint(-290, 290)
        food.goto(x, y)

        # 新增蛇身
        new_segment = turtle.Turtle()
        new_segment.speed(0)
        new_segment.shape("square")
        new_segment.color("grey")
        new_segment.penup()
        segments.append(new_segment)

        # 增加分数
        score += 10

        if score > high_score:
            high_score = score

        pen.clear()
        pen.write("得分: {}  最高分: {}".format(score, high_score), align="center", font=("Courier", 24, "normal"))

    # 新增蛇身
    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()

    # 碰到蛇身判断
    for segment in segments:
        if segment.distance(head) < 20:
            time.sleep(1)
            head.goto(0, 0)
            head.direction = "stop"

            # 隐藏蛇身
            for segment in segments:
                segment.goto(1000, 1000)

            # 清空蛇身列表
            segments.clear()

            # 重置分数
            score = 0
            pen.clear()
            pen.write("得分: {}  最高分: {}".format(score, high_score), align="center", font=("Courier", 24, "normal"))

    time.sleep(delay)

wn.mainloop()

这个小游戏使用turtle库创建游戏窗口以及蛇和食物的图形。玩家需要通过键盘控制蛇的移动，去吃食物并且尽可能地长大，直到游戏结束。你可以根据自己的需求，修改代码来创建自己的贪吃蛇游戏。