Making a dot gradient

This is a script with a couple of loops that will make a dot gradient.

from scribus import *
if newDoc(PAPER_A4, (10, 10, 10, 10), LANDSCAPE, 1, UNIT_POINTS, 
NOFACINGPAGES, FIRSTPAGERIGHT):

      spx=20          # x co-ord Start point
      spy=20          # y co-ord Start point
      width=4	      # first circle diameter
      

      b="Black"       # add other colors as required
      b1="Blue"
      w="White"
      
      for j in range(0,4):
          for i in range(0,30):


              c = createEllipse(spx, spy+50, width, width)
              setLineWidth(0, c)
              setFillColor(b1, c)
              setFillShade(40 + 2*i,c)
              spx=spx+20
              spy=spy-0.5
              width=width + 1
     
          spy=spy+40
          width=4
          spx=20

      saveDocAs("lotsa_circles.sla") #Make sure this is writable