I made a picture for you

from graphics import *
import time

def QuestionTwo():

    length = 500
    height = 20
    start = Point(5,5)

    global win

    win = GraphWin("window", 500, 150)

    cantor_set(win, start, length, height)

    win.getMouse()

    win.close()

    return

def cantor_set(win, point, length, height):

    p = point.x
    q = point.y

    if length < 1:
        return

    LINE = Line(Point(p,q), Point(p+length,q))

    LINE.setWidth(50) ; LINE.draw(win)

    increment = length / 3
    q        += height


    cantor_set(win, Point(p, q + height), increment, height)
    cantor_set(win, Point(p + length * (2/3) , q + height), increment, height)

    return

QuestionTwo()