python画满屏玫瑰代码

以下是Python画满屏玫瑰的代码：

import turtle

def draw_petal(t, r, angle):
    for i in range(2):
        t.circle(r, angle)
        t.left(180-angle)

def draw_flower(t, n, r, angle):
    for i in range(n):
        draw_petal(t, r, angle)
        t.left(360/n)

def draw_branch(t, len):
    if len > 10:
        t.forward(len)
        t.right(20)
        draw_branch(t, len-15)
        t.left(40)
        draw_branch(t, len-15)
        t.right(20)
        t.backward(len)

def main():
    t = turtle.Turtle()
    t.speed(0)
    t.color("red")
    t.penup()
    t.goto(0, -200)
    t.pendown()
    draw_flower(t, 10, 100, 30)
    t.penup()
    t.goto(0, 0)
    t.pendown()
    t.color("brown")
    draw_branch(t, 100)
    turtle.done()

if __name__ == "__main__":
    main()