环境：
一、安装依赖包
pygame zero
二、编写代码
import pgzrun import random R=100 def draw(): screen.fill('white') for y in range(R,600,2*R): for x in range(R, 800, 2*R): for r in range(R,0,-10): screen.draw.filled_circle((x, y), r, (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))) def on_mouse_down(): draw() pgzrun.go()
三、运行查看效果
