from base64 import encodestring, decodestring
from random import randint

mat = encodestring(open("orig.jpg", "rb").read())
gt = "".join([str(randint(0, 9)) if c == '0' and randint(0, 9) < 1 else c for c in mat])
open("glitched.jpg", "wb").write(decodestring(gt))