def disable_qt4(self):
        """Disable event loop integration with PyQt4.

        This merely sets PyOS_InputHook to NULL.
        """
        if self._apps in GUI_QT4:
            self._apps[GUI_QT4]._in_event_loop = False
        self.clear_inputhook()
dataset/ETHPy150Open ipython/ipython-py3k/IPython/lib/inputhook.py/InputHookManager.disable_qt4/swapped operands of `in`