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To: python-list@python.org
From: Sturla Molden <sturla.molden@gmail.com>
Subject: Re: Obscuring Python source from end users
Date: Mon, 29 Sep 2014 14:51:33 +0000 (UTC)
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Steven D'Aprano <steve+comp.lang.python@pearwood.info> wrote:

> Another possibility is to distribute your modules inside a zip file. See
> here:
> 
> https://mail.python.org/pipermail/python-list/2014-July/675506.html
> 
> Such zip files are not just runnable, but also importable. Depending on your
> Excel requirements, you might need a tiny driver script as above.

It should also be possible to temper with the zipimport module to allow a
'scrambled' zip file. That makes it harder for users to access the code by
unpacking the zip file.

py2exe will collect pyc files into a single zip file and import that. It
does not need a driver script because it embeds the Python interpreter in
an executable. 

Yet another option is to compile the Python code with Cython and distribute
everything as compiled pyd files.

Sturla