gistfile1.txt

Traceback (most recent call last):
  File "ipython_widget3.py", line 5, in <module>
    from IPython.frontend.qt.console.rich_ipython_widget import RichIPythonWidget
  File "../ipython/IPython/frontend/qt/console/rich_ipython_widget.py", line 15, in <module>
    from IPython.external.qt import QtCore, QtGui
  File "../ipython/IPython/external/qt.py", line 23, in <module>
    QtCore, QtGui, QtSvg, QT_API = load_qt(api_opts)
  File "../ipython/IPython/external/qt_loaders.py", line 258, in load_qt
    api_options))
ImportError:
    Could not load requested Qt binding. Please ensure that
    PyQt4 >= 4.7 or PySide >= 1.0.3 is available,
    and only one is imported per session.

    Currently-imported Qt library:   'pyqtv1'
    PyQt4 installed:                 True
    PySide >= 1.0.3 installed:       False
    Tried to load:                   ['pyside', 'pyqt']