Pygame draw antialiased filled polygon

The documentation says "For aapolygon, use aalines with the ‘closed’ parameter.", but pygame.draw.aalines doesn't let me specify the width (0 = filled), making it not fill the surface. This looks just terrible:

These circles look much better:

How can I do this?

I generate the surface using quadratic beziers, whose coordinates get appended to a list. Then I draw it onto the surface like this (In the image above I did this twice, once for the outer circle and once for the inner circle):

pygame.draw.polygon(self.image,fclr,self.points)

And the drawing code (shape.image is the same surface as self.image in the code above):

screen.fill((0,0,0))
screen.blit(shape.image,(100,100))
pygame.display.flip()

martineau's comment is on point: In order to draw antialiased filled shapes with pygame, use the module gfxdraw and draw one regular filled shape and one antialiased outline. From http://www.pygame.org/docs/ref/gfxdraw.html:

"To draw an anti aliased and filled shape, first use the aa* version of the function, and then use the filled version."

Note that you need to import gfxdraw explicitly, i.e. from pygame import gfxdraw.