How do I drop two Python objects?

This is the code. When you do that, If you run it, on the screen One rectangular shape, white and one red, were successful. However, the original position of the figure is one (0,0), and the other (500,0), so two shapes should be created at the left end and the right end, but they are concentrated in one place and superimposed. How can I change the position to the left end and the right end of the figure? The color is applied normally, but the location is not applied.