title: PyQt restarts shell
body: <p>If I'm trying to create a window or prompt a file dialog in the IDLE shell, nothing opens and the shell restarts.  Is this a bug of some kind?  I can't find anything about it.  I'm new to PyQt (and Python in general) but had been able to get tutorials to work correctly.  The last day or so, if I open IDLE and import PyQt4, QtGui, etc and then run something simple like QFileDialog.getOpenFileName, the shell just restarts.  Any ideas? </p>