PyWrap is part of the Py collection of programs.
PyWrap is a runtime utility that lets you run an existing wxPython program with a PyCrust frame at the same time. Inside the PyCrust shell namespace, the local variable app is assigned to your application instance. In this way you can introspect your entire application within the PyCrust shell, as well as the PyFilling namespace viewer. And through the use of the Py decorator classes, PyCrust can display wxPython function and method signatures as well as docstrings for the entire wxPython library.