使用turtle库绘制一条蛇python语言

好的，以下是使用turtle库绘制一条蛇的Python代码：

import turtle
import time
import random

delay = 0.1

# 设置屏幕
wn = turtle.Screen()
wn.title("Snake Game")
wn.bgcolor("green")
wn.setup(width=600, height=600)
wn.tracer(0)

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

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

segments = []

# 定义函数
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)

# 移动函数
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"

# 定义键盘绑定
wn.listen()
wn.onkeypress(go_up, "w")
wn.onkeypress(go_down, "s")
wn.onkeypress(go_right, "d")
wn.onkeypress(go_left, "a")

# 游戏循环
while True:
    wn.update()

    # 检查碰撞
    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"

        # 隐藏分段
        for segment in segments:
            segment.goto(1000, 1000)

        # 清空分段列表
        segments.clear()

    # 检查食物碰撞
    if head.distance(food) < 20:
        # 食物移动到随机位置
        x = random.randint(-290, 290)
        y = random.randint(-290, 290)
        food.goto(x, y)

        # 添加新的分段
        new_segment = turtle.Turtle()
        new_segment.speed(0)
        new_segment.shape("square")
        new_segment.color("grey")
        new_segment.penup()
        segments.append(new_segment)

    # 移动分段
    for index in range(len(segments)-1, 0, -1):
        x = segments[index-1].xcor()
        y = segments[index-1].ycor()
        segments[index].goto(x, y)

    # 移动第一个分段到头部
    if len(segments) > 0:
        x = head.xcor()
        y = head.ycor()
        segments[0].goto(x, y)

    move()

    # 检查蛇头与分段碰撞
    for segment in segments:
        if segment.distance(head) < 20:
            time.sleep(1)
            head.goto(0, 0)
            head.direction = "stop"

            # 隐藏分段
            for segment in segments:
                segment.goto(1000, 1000)

            # 清空分段列表
            segments.clear()

    time.sleep(delay)

运行代码后，将会看到一个绘制了蛇和食物的窗口。通过按键盘上的“w”、“s”、“a”、“d”键，可以控制蛇的移动方向。当蛇头碰到边缘或者碰到自己的身体时，游戏结束。