python四十几行代码实现界面化贪吃蛇

可能做得比较简单，蛇不像蛇，大家可以根据这个稍微改编一下就好了，因为简单，所以方便学习，不废话了，上代码（更多学习项目或者跟我一样都在学习python的哥们可以进我群一起交流970353786，额，不要加我好友了，加了我也会同意，一起学习吧，川川计算机专业哦）：

python贪吃蛇

from turtle import *
from random import randrange
from freegames import square, vector
food = vector(0, 0)
snake = [vector(10, 0)]
aim = vector(0, -10)

def change(x, y):
"Change snake direction."
aim.x = x
aim.y = y
def inside(head):
"Return True if head inside boundaries."
return -200 < head.x < 190 and -200 < head.y < 190
def move():
"Move snake forward one segment."
head = snake[-1].copy()
head.move(aim)
if not inside(head) or head in snake:
square(head.x, head.y, 9, 'red')
update()
return
snake.append(head)
if head == food:
print('Snake:', len(snake))
food.x = randrange(-15, 15) * 10
food.y = randrange(-15, 15) * 10
else:
snake.pop(0)
clear()
for body in snake:
square(body.x, body.y, 9, 'black')

square(food.x, food.y, 9, 'green')
update()
ontimer(move, 100)
setup(420, 420, 370, 0)
hideturtle()
tracer(False)
listen()
onkey(lambda: change(10, 0), 'Right')
onkey(lambda: change(-10, 0), 'Left')
onkey(lambda: change(0, 10), 'Up')
onkey(lambda: change(0, -10), 'Down')
move()
done()