How to protect P/Cython Code against Reverse Engineering / Decompilation

[llanitedave]

Dedicated hackers can pretty much reverse engineer anything (including the Beale ciphers, which were deciphered this January (2017),
the treasure found was worth $43 million, Interested? see: https://en.wikipedia.org/wiki/Beale_ciphers)
Question is, if the thing being reverse engineered is worth the effort.

Actually, this one hasn't been deciphered yet, I thought it had. My mistake. So there you go, a challenge for any taker!

Or, for a challenge on a real undeciphered script, there's always Linear A.