def mult(A, B):
    return (A[0] * B[0] - A[1] * B[1], A[0] * B[1] + A[1] * B[0])
turn = (-1/2, 3**0.5 / 2)
dire = (1, 0)

from tkinter import *
root = Tk()
cnv = Canvas(root, width = 1000, height = 1000);


x, y = 250, 250



Leng = 500

def tri(depth):
    global cnv, dire, x, y, Leng
    if (depth == 0):
        cnv.create_line(x, y, int(x + Leng * dire[0]), int(y + Leng * dire[1]))
        x += dire[0] * Leng; y += dire[1] * Leng;
    else:




depth = 0;
def call(F):
    global depth, dire
    tri(depth)
    dire = mult(dire, turn)
    tri(depth)
    dire = mult(dire, turn)
    tri(depth)
    dire = mult(dire, turn)


cnv.bind("<Button-1>", tri)
cnv.pack()
root.mainloop();