How to install a size-package?

[Ingo Linkweiler]

Hello,

I want to install my software as python site-package.
I have tested it this way:
- created a directory "mymod" in the "site-packages"
- copied my software (submod1.py ... submodn.py) in this directory
- renamed the main module to "__init__.py"

This is working, but now I want to write a "setup.py", which will do 
this for the user.

I have looked at "site.py", but still do not know what to do.

Ingo