Python使用Turtle库绘制一棵西兰花

from turtle import Turtle
p=Turtle()
p.pensize(5)
p.color(clr)
p.hideturtle()
p.getscreen().tracer(30,0)

p.left(90)
p.penup()
p.goto(x,y)
p.pendown()

p.forward(l)
q=p.clone()
p.left(a)
q.right(a)

def tree(plist,l,a,f):
  if l>5:
    lst=[]
    for p in plist:
      p.forward(l)
      q=p.clone()
      p.left(a)
      q.right(a)
      lst.append(p)
      lst.append(q)
    tree(lst,l*f,a,f)

 def maketree(x,y,clr):
  p=Turtle()
  p.pensize(5)
  p.color(clr)
  p.hideturtle()
  p.getscreen().tracer(30,0)
  #p.speed(10)
  p.left(90)
  p.penup()
  p.goto(x,y)
  p.pendown()
  t=tree([p],200,20,0.6375)
  #print(len(p.getscreen().turtles()))

def main():
  maketree(0,-300,"green")

main()