python3-pyqt4.qsci-dbg 2.8.3+dfsg-3 (amd64 binary) in ubuntu vivid

 QScintilla is a text editor for Qt4 with features especially useful when
 writing and debugging source code. These include support for syntax
 styling, error indicators, code completion, call tips and margins.
 .
 This package contains the extensions built for the Python 3 debug
 interpreter.