This sample uses the python_lib.cat file to verify all imports.
To build, open the Visual Studio Developer Command prompt of your choice (making sure you have a suitable Python install or build). Run set PYTHONDIR=<path to your build or install>, then run make.cmd to build.
Once built, the new spython.exe will need to be moved into a regular install directory. It expects a DLLs\python_lib.cat file to exist and be signed. A more complete example may include a search for matching catalog files and/or restricting the valid certificates to a known set.