how to make image draw/generation faster?

how to make image draw/generation faster?

 

I have store a large array with around 11400 pairs of x,y coordinate. It took the draw.point(xy,fill=(255,255,255)) function about 100 seconds. How do I improve on that?

 

And I have always wonder about this. Is c++ faster then python when comes to image creation? Is python faster or slower then java??