gistfile1.txt

from Tkinter import *
from math import *
from time import *
class TurtleClass(object):
  """a turtle class """    
  def __init__(self,c):
    self.x,self.y,self.d=100,300,0
    self.c = c 
    self.l1,self.l2,self.l3 = 0,0,0
  
  def rotate_left(self,a):
    self.d=self.d+a

  def rotate_right(self,a):
    self.d=self.d-a

  def move_forward(self,d):
    x_new=self.x + d*cos(self.d*pi/180)
    y_new=self.y - d*sin(self.d*pi/180)
    self.l4 = self.c.create_line(self.x,self.y,x_new,y_new)
    self.x,self.y=x_new,y_new

  def flake(self,l):
    if l <10:
      self.move_forward(l)
      self.c.update()
      sleep(.001)
      return
    else:
      self.flake(l/3)
      self.rotate_left(60)
      self.flake(l/3)
      self.rotate_right(120)
      self.flake(l/3)
      self.rotate_left(60)
      self.flake(l/3)

r=Tk()
c=Canvas(width=600,height=600)
c.pack()
b=TurtleClass(c)

b.rotate_left(60)
b.flake(300)
b.rotate_right(120)
b.flake(300)
b.rotate_right(120)
b.flake(300)

t=raw_input()

Koch SNow Flake pattern using Python and Python-TKInter