Update img_avg.py

Author: Citrus716

2_intermediate/chapter10/practice/img_avg.py

@@ -1,4 +1,4 @@
-""" Here is the challenge problem for 2d loops>
+""" Here is the challenge problem for 2d loops:
 Images are often represented as 3d arrays,
 where the rows and columns are the pixels in the image,
 and each pixel has an r, g, and b value.
@@ -8,9 +8,9 @@
 will return a different image where each pixel is the average
 of the pixels surrounding it in the original image.
 
-The neighbors of an image are all the pixels that surroun it,
-1 on each side, and 4 on the diagonals, for 8 in total. 
-Each pixel doesn't necessarily have 8 neighbors, though (think about why)
+The neighbors of an image are all the pixels that surround it,
+1 on each side, and 4 on the diagonals, for 8 in total. Each
+pixel doesn't necessarily have 8 neighbors, though (think about why)
 
 The code to grab an image from the internet and make it
 into an array is given to you. The code also displays the new image
@@ -20,8 +20,8 @@
 To find the average value of all of a pixels neighbors, you must
 change the average of the red value to the red value, blue to blue, etc.
 For example, if the neighbors of a pixel with value [1,2,3]
-were [20,30,40] and [10,120,30], the new pixel that would replace the original one would be
-[15,75,35]
+were [20,30,40] and [10,120,30], the new pixel that would replace the 
+original one would be [15,75,35]
 """
 
 from PIL import Image