用python写一个会动的七彩蟒蛇

好的，以下是一个简单的Python代码，可以绘制出一个会动的七彩蟒蛇：

import turtle
import random

colors = ["red", "orange", "yellow", "green", "blue", "purple"]

# 创建画布
wn = turtle.Screen()
wn.bgcolor("black")
wn.title("Rainbow Snake")

# 创建蛇头
head = turtle.Turtle()
head.shape("circle")
head.color(random.choice(colors))
head.penup()
head.goto(0, 0)
head.speed(0)
head.direction = "stop"

# 创建食物
food = turtle.Turtle()
food.shape("circle")
food.color("white")
food.penup()
food.goto(random.randint(-290, 290), random.randint(-290, 290))

# 移动函数
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)

# 转向函数
def go_up():
    if head.direction != "down":
        head.direction = "up"
        head.color(random.choice(colors))

def go_down():
    if head.direction != "up":
        head.direction = "down"
        head.color(random.choice(colors))

def go_right():
    if head.direction != "left":
        head.direction = "right"
        head.color(random.choice(colors))

def go_left():
    if head.direction != "right":
        head.direction = "left"
        head.color(random.choice(colors))

# 注册监听器
wn.listen()
wn.onkeypress(go_up, "Up")
wn.onkeypress(go_down, "Down")
wn.onkeypress(go_right, "Right")
wn.onkeypress(go_left, "Left")

while True:
    wn.update()

    # 碰到边界
    if head.xcor() > 290 or head.xcor() < -290 or head.ycor() > 290 or head.ycor() < -290:
        head.goto(0, 0)
        head.direction = "stop"
        head.color(random.choice(colors))

    # 吃到食物
    if head.distance(food) < 20:
        food.goto(random.randint(-290, 290), random.randint(-290, 290))
        head.color(random.choice(colors))

    # 移动蛇身
    for index in range(len(turtles) - 1, 0, -1):
        x = turtles[index - 1].xcor()
        y = turtles[index - 1].ycor()
        turtles[index].goto(x, y)

    # 移动蛇头
    move()

    # 延迟
    turtle.delay(0.1)

turtle.mainloop()

这个代码使用了Python的turtle库，在屏幕中绘制了一个七彩的蟒蛇。你可以使用上下左右键来控制蛇的移动方向，当蛇吃到食物时会变换颜色。