Dare I hope that this is a straightforward, nice looking open source python editor with code folding, and no show-stopper bugs? I do dare hope.
"DrPython is a highly customizable, extensible editor/environment for developing programs written in the Python programming Language. It is implemented in wxPython.
(wxPython is a set of python bindings (and extra widgets) for wxWidgets).
It uses Scintilla for the Text Controls.