[Tutor] Need help with encoder & decryption keys

[Trey Keown]

Hey all,
  Been away for a while. So, I'm in the process of making a program for
encrypting and decrypting strings of text. And I was wondering how it
would be possible to perhaps keep keys in a .pyc file, and keep them
from being isolated, and messages being intercepted. So... is it
possible to decompile things within a .pyc file?
  This isn't for any serius project, just me attempting to make something
to prove that I can do it.

Thanks for any help.