I've seen:

* .net product with embedded ironpython for scripting ;

* desktop client talking to a backend server that happened to be implemented in python ;

* desktop application implemented as a collection of command line tools for batch processing, with a windows desktop frontend. Some of the command line tools were implemented in python and bundled using py2exe, other command line tools were written in other languages

these were all proprietary things with varying numbers of enterprisey customers, apologies, no sample code.