Python iterate through pixels of image

Question

I'm trying to iterate through pixels of an image. I set the size and then use a for loop, however I get a type error: object not iterable. I have imported PIL and Image

w=100
h=200
im=im.resize((w,h), Image.ANTIALIAS)
for a in w:
    for b in h:
    (...)

Answer 1

The type error issue is coming from the fact that w and h and integers and therefore cannot be iterated through. The construct for i in thing: loops through every item in thing , so if thing is a list [2, 5, 6] , for example, i will be 2 and then 5 and then 6.

What you want is for a in range(w) and for b in range(h) , which will allow you to iterate through all integers from 0 to w or h .