Reorganising Python.md so that headings match Cxx.md
Reorganising Python.md so that headings match Cxx.md

lorensen/VTKExamples,lorensen/VTKExamples,lorensen/VTKExamples,lorensen/VTKExamples,lorensen/VTKExamples,lorensen/VTKExamples,lorensen/VTKExamples