function enum_pixels

[Python-ZZY]

pygame's pixel processing is sometimes necessary, and it can be difficult and slow to process every pixel on a surface. I wonder if there's a faster way.
If so, I suggest adding a function enum_pixels. Here's what I expect:
enum_pixels(func, *sufaces) -> None
Enumerates pixels on multiple surfaces and calls func several times for processing. The func function returns a value in the form of a generator to make changes to the pixel.

def func(pos, *colors):
    for color in colors:
        yield (255-color[0], 255-color[1], 255-color[2]) #reverse color
pg.enum_pixels(func, surface)