import turtle turtle.setup(650,350,200,200)#设置窗体的其实位置和宽高，四个参数，宽，高，开始x，开始y，默认位置是在中间 turtle.penup() turtle.fd(-250) turtle.pendown() turtle.pensize(25) turtle.pencolor("purple") turtle.seth(-40) for i in range(4): turtle.circle(40,80) turtle.circle(-40,80) turtle.circle(40,80/2) turtle.fd(40) turtle.circle(16,180) turtle.fd(40*2/3) #turtle.done() print("python".center(20,"="))#用于打印规则 print("{:=^20}".format("python"))#填充、对齐、宽度