Paint a leaf with python turtle

import turtle as tt
import numpy as ny
import random

x = ny.array([[.5],[.5]])
p = [.85,.92,.99,1.00]
A1 = ny.array([[.85,.04],
              [-0.04,.85]])
A2 = ny.array([[.2,-0.26],
              [.23,.22]])
A3 = ny.array([[-0.15,.28],
              [.26,.24]])
A4 = ny.array([[0,0],
              [0,.16]])
b1 = b2 = ny.array([[0],[1.6]])
b3 = ny.array([[0],[.44]])


cnt = 1
while 1:
    cnt += 1
    if cnt == 2000:
        break

    r = random.random()
    if(r<p[0]):
        x = ny.dot(A1,x)+b1
    elif(r<p[1]):
        x = ny.dot(A2,x)+b2
    elif(r<p[2]):
        x = ny.dot(A3,x)+b3
    else:
        x = ny.dot(A4,x)

    tt.up()
    tt.goto(x[0][0]*50,x[1][0]*40-240)
    tt.down()
    tt.speed(0)
    tt.dot()

tt.mainloop()