Is it easy to fully decompile python compiled(*.pyc) files?

Question

I wanted to know that how much easy is to decompile python byte code. I have made an application in python whose source I want to be secure. I am using py2exe which basically relies on python compiled files.

Does that secure the code?

Answer 1

Depends on your definition of "fully" (in "fully decompile")...;-). You won't easily get back the original Python source -- but getting the bytecode is easy, and standard library module dis exists exactly to make bytecode easily readable (though it's still bytecode, not full Python source code;-).