Python reads data from the image through channel B

After encountering an image information hiding question, the question hides the information in Channel B of the image, and finds a readable tool on the Internet,

It's just a graphical figure. You need to move it one by one, and it's a little troublesome to start reading data. You want to write a simple Applet and print all the information directly.

1 #! /Usr/bin/env python 2 # coding = UTF-8 3''' read the data hidden in Channel B from the Image ''' 4 import Image 5 6 im1_image.open('4.png ') 7 pixdata = im. load () 8 result = [] 9 # obtain the range to be resolved. We recommend that you do not run 10 for y in xrange (limit 6, 10 80) on the entire graph ): # modify the range of y to 11 for x in xrange () as needed: # modify the range of x to 12 data = pixdata [x, y] [2] 13 result. append (chr (data) 14 print ''. join (result)