How can I process images faster with Python?

I'd trying to write a script that will detect an RGB value on the screen then click the x,y values. I know how to perform the click but I need to process the image a lot faster than my code below currently does. Is this possible with Python?

So far I'm reading a row at a time, when x = 1920 I go onto the second row but it takes about 10 seconds to do one row. By that time the person on screen would have moved into a completely different spot and I have only done one row!

Can I speed this code up OR is there a better way to achieve what I want? If it is not possible in Python I am open to C++ options :)

import Image

x = 0
y = 0

im = Image.open("C:\Users\sean\Desktop\screen.jpg")
pix = im.load()
print im.size #get width and height of the image for iterating over
while x < 1920:
    print pix[x,y] #get RGBA value of the pixel of an image
    print "x is:" +str(x)
    x = x + 1
    print "y is: " +str(y)
    if x == 1920:
        x = 0
        y = y + 1