Reading Image in Python

import array,Image,numpy

from datetime import datetime

s_time = datetime.now().microsecond

print "Starting Time " , s_time

im = Image.open('/home/anthoniraj/cameraman.tif')

pixels = im.load()

x,y =im.size

print x,y

#print pixels[0,0].__getitem__(3)

for i in range(x):

for j in range(y):

print pixels[i,j]

im.show(im)

e_time = datetime.now().microsecond

print "Ending Time %" ,e_time

print "Total Execution time " ,(e_time-s_time)