一个很智障的小游戏，就用了turtle和鼠标控制（点到圈里面生成下一个圈，嗯，很智障）

from turtle import *
from random import *
R=20
size =getscreen().screensize()
w = size[0]
h = size[1]
setup(2*w,2*h)
speed(0)
hideturtle()
bgcolor('gray')
pencolor('white')
def draw():
    global x
    global y
    x=randint(-w+R,w-R)
    y=randint(-h+R,h-R)
    pu()
    goto(x,y)
    pd()
    circle(R)
def isincircle(a,b):
    if x-R<a<x+R and y<b<y+2*R:
        draw()
for i in range(20):
    m = randint(-w+R,w-R)
    n = randint(-h+R,h-R)
    pu()
    goto(m,n)
    pd()
    circle(20)
pencolor('white')
s=Screen()
pencolor('red')
draw()
pencolor('white')
s.onclick(isincircle)
done()