Tue Oct 19 11:23:53 2021

atbash_test():

  Python version: 3.6.9
  atbash_encrypt() encrypts a plain text using the Atbash
  substitution cipher.
  atbash_encrypt() can also decrypt an encryted text.

PLAIN:   "A man, a plan, a canal - Panama!"
CRYPT:   "Z nzm, z kozm, z xzmzo - Kzmznz!"
DECRYPT: "A man, a plan, a canal - Panama!"


PLAIN:   "There are a thousand hacking at the branches of evil for every one who is striking at its root."
CRYPT:   "Gsviv ziv z gslfhzmw szxprmt zg gsv yizmxsvh lu vero uli vevib lmv dsl rh hgirprmt zg rgh illg."
DECTYPT: "There are a thousand hacking at the branches of evil for every one who is striking at its root."

atbash_test():
  Normal end of execution.
Tue Oct 19 11:23:53 2021