Modify any of the functions from the last chapter to use a nested loop. Check the result to make sure it still does the same thing.

Question

There any many potential options here, but they all require the same approach. Instead of looping through each pixel, loop through the x values and the y values as two separate loops. The most useful functions to do this in are those that only make changes over a range, as it avoids checking a lot of unnecessary pixels. For example, the removeRedEye function:

Answer 1

```
def removeRedEye(pic,startX,startY,endX,endY,endColor):
for x in range(startX, endX):
for y in range(startY, endY):
px = getPixel(pic, x, y)
if (distance(red,getColor(px)) < 165):
setColor(px,endColor)
```