Generates landscape ruled paper

papergen.py

#!/usr/bin/env python2

margin = 0.375
lineheight = (8.5 - 2*margin)/25
linewidth = 11 - 2*margin
midgutter = 11.0/2
ypts = [(margin, midgutter-(margin/2)), (midgutter+(margin/2), 11.0 - margin)]
color = '#A4DDED'
thickness = 1.0/64

print '<svg width="11in" height="8.5in" xmlns="http://www.w3.org/2000/svg">'
for line in xrange(0, 26):
  x = margin + line*lineheight
  for (ystart, yend) in ypts:
    print '<line x1="{1}in" x2="{2}in" y1="{0}in" y2="{0}in" stroke-width="{3}in" stroke="{4}" stroke-opacity="0.5"/>'.format(x, ystart, yend, thickness, color)
print '</svg>'