How do i do this in Python processing 3.5?

Figure 1: A 55 black and white checkerboard Your task is to draw a 55 black and white checkerboard in Processing that fills the entire space of a 250250 pixel canvas. Have the top-left most tile coloured blact like in the figure. Make sure to write helpful comments throughout your code. Especially with longer programs, it can become difficult to know what your code is doing from a glance. Comments make your program easier to read and easier to find errors, so get into a good habit of commenting your codel Don't overdo it though as too many comments can be just as much a hinderance as too few