using-steganography

# Print 'Hello, World!' by extracting the characters from an image using steganography

from PIL import Image
import string 
import requests
from io import BytesIO

r = requests.get('https://raw.githubusercontent.com/im-NL/nl.github.io/master/encoded.png')     # fetch encoded image from my github
im = Image.open(BytesIO(r.content)) # open image and make it a pillow image object

pixelMap = im.load()
a = 0 
alphabet = string.ascii_uppercase

word = ''

img = Image.new(im.mode, im.size)
pixelsNew = img.load()
number_of_chars = pixelMap[777, 777]
for height in range(0, 1920, 10):
    for width in range(0, 1080, 10):

        letter, g, b, a = pixelMap[height, width]   # get the RGBA values of the pixels 
        try:
            if letter == 69:
                word += ' '
            else:
                word += alphabet[letter]   # add the letter encoded in the pixel to a string
        except:
            print(word)

print(', '.join(word[:number_of_chars[0]].title().split()) + '!')   # turn HELLO WORLD (the output) to Hello, World! using join(), split() and title()