from cs1graphics import *

paper = Canvas(400,200)

numStrings = 50
gapX = paper.getWidth()/numStrings
gapY = paper.getHeight()/numStrings

for k in range(numStrings):
    line = Path(Point(0, k*gapY), Point(k*gapX, paper.getHeight()))
    line.setBorderColor('red')
    paper.add(line)

    line = Path(Point(paper.getWidth(), k*gapY), Point(k*gapX, 0))
    line.setBorderColor('blue')
    paper.add(line)