盾牌用turtle库里的circle（），十分逼真！
代码如下：
import turtle as tdef setpen(x, y):t.penup()t.goto(x, y)t.pendown()t.setheading(0)def circle(x, y, r, color):n = 36angle = (360 / n)pi = 3c = ((2 * pi) * r)l = (c / n)start_x = (x - l / 2)start_y = (y + r)setpen(start_x, start_y)t.pencolor(color)t.fillcolor(color)t.begin_fill()for i in range(n):t.forward(l)t.right(angle)t.end_fill()def five_star(l):setpen(0, 0)t.setheading(162)t.forward(150)t.setheading(0)t.fillcolor('WhiteSmoke')t.begin_fill()t.hideturtle()t.penup()for i in range(5):t.forward(l)t.right(144)t.end_fill()def sheild():circle(0, 0, 300, 'red')circle(0, 0, 250, 'white')circle(0, 0, 200, 'red')circle(0, 0, 150, 'blue')five_star(284)if (__name__ == '__main__'):sheild()
