eric3 is a full featured Python IDE that is written in PyQt using the 
QScintilla editor widget. For information on PyQt and QScintilla please 
see Riverbank Computing. Please note, that eric3 needs PyQt 3.6 or newer 
and QScintilla 1.0 or newer.

WWW: http://www.die-offenbachs.de/detlev/eric3.html