How to use the qtconsole.qt.QtGui.QKeySequence function in qtconsole

action.setShortcut(printkey)
        action.setShortcutContext(QtCore.Qt.WidgetWithChildrenShortcut)
        action.triggered.connect(self.print_)
        self.addAction(action)
        self.print_action = action

        action = QtGui.QAction('Save as HTML/XML', None)
        action.setShortcut(QtGui.QKeySequence.Save)
        action.setShortcutContext(QtCore.Qt.WidgetWithChildrenShortcut)
        action.triggered.connect(self.export_html)
        self.addAction(action)
        self.export_action = action

        action = QtGui.QAction('Select All', None)
        action.setEnabled(True)
        selectall = QtGui.QKeySequence(QtGui.QKeySequence.SelectAll)
        if selectall.matches("Ctrl+A") and sys.platform != 'darwin':
            # Only override the default if there is a collision.
            # Qt ctrl = cmd on OSX, so the match gets a false positive on OSX.
            selectall = "Ctrl+Shift+A"
        action.setShortcut(selectall)
        action.setShortcutContext(QtCore.Qt.WidgetWithChildrenShortcut)
        action.triggered.connect(self.select_all)
        self.addAction(action)
        self.select_all_action = action

        self.increase_font_size = QtGui.QAction("Bigger Font",
                self,
                shortcut=QtGui.QKeySequence.ZoomIn,
                shortcutContext=QtCore.Qt.WidgetWithChildrenShortcut,
                statusTip="Increase the font size by one point",
                triggered=self._increase_font_size)

triggered=self.undo_active_frontend
            )
        self.add_menu_action(self.edit_menu, self.undo_action)

        self.redo_action = QtGui.QAction("&Redo",
            self,
            shortcut=QtGui.QKeySequence.Redo,
            statusTip="Redo last action if possible",
            triggered=self.redo_active_frontend)
        self.add_menu_action(self.edit_menu, self.redo_action)

        self.edit_menu.addSeparator()

        self.cut_action = QtGui.QAction("&Cut",
            self,
            shortcut=QtGui.QKeySequence.Cut,
            triggered=self.cut_active_frontend
            )
        self.add_menu_action(self.edit_menu, self.cut_action, True)

        self.copy_action = QtGui.QAction("&Copy",
            self,
            shortcut=QtGui.QKeySequence.Copy,
            triggered=self.copy_active_frontend
            )
        self.add_menu_action(self.edit_menu, self.copy_action, True)

        self.copy_raw_action = QtGui.QAction("Copy (&Raw Text)",
            self,
            shortcut="Ctrl+Shift+C",
            triggered=self.copy_raw_active_frontend
            )

triggered=self.toggle_menu_bar)
            self.add_menu_action(self.view_menu, self.toggle_menu_bar_act)

        fs_key = "Ctrl+Meta+F" if sys.platform == 'darwin' else "F11"
        self.full_screen_act = QtGui.QAction("&Full Screen",
            self,
            shortcut=fs_key,
            statusTip="Toggle between Fullscreen and Normal Size",
            triggered=self.toggleFullScreen)
        self.add_menu_action(self.view_menu, self.full_screen_act)

        self.view_menu.addSeparator()

        self.increase_font_size = QtGui.QAction("Zoom &In",
            self,
            shortcut=QtGui.QKeySequence.ZoomIn,
            triggered=self.increase_font_size_active_frontend
            )
        self.add_menu_action(self.view_menu, self.increase_font_size, True)

        self.decrease_font_size = QtGui.QAction("Zoom &Out",
            self,
            shortcut=QtGui.QKeySequence.ZoomOut,
            triggered=self.decrease_font_size_active_frontend
            )
        self.add_menu_action(self.view_menu, self.decrease_font_size, True)

        self.reset_font_size = QtGui.QAction("Zoom &Reset",
            self,
            shortcut="Ctrl+0",
            triggered=self.reset_font_size_active_frontend
            )

# Timer to flush the pending stream messages. The interval is adjusted
        # later based on actual time taken for flushing a screen (buffer_size)
        # of output text.
        self._pending_text_flush_interval = QtCore.QTimer(self._control)
        self._pending_text_flush_interval.setInterval(100)
        self._pending_text_flush_interval.setSingleShot(True)
        self._pending_text_flush_interval.timeout.connect(
                                            self._on_flush_pending_stream_timer)

        # Set a monospaced font.
        self.reset_font()

        # Configure actions.
        action = QtGui.QAction('Print', None)
        action.setEnabled(True)
        printkey = QtGui.QKeySequence(QtGui.QKeySequence.Print)
        if printkey.matches("Ctrl+P") and sys.platform != 'darwin':
            # Only override the default if there is a collision.
            # Qt ctrl = cmd on OSX, so the match gets a false positive on OSX.
            printkey = "Ctrl+Shift+P"
        action.setShortcut(printkey)
        action.setShortcutContext(QtCore.Qt.WidgetWithChildrenShortcut)
        action.triggered.connect(self.print_)
        self.addAction(action)
        self.print_action = action

        action = QtGui.QAction('Save as HTML/XML', None)
        action.setShortcut(QtGui.QKeySequence.Save)
        action.setShortcutContext(QtCore.Qt.WidgetWithChildrenShortcut)
        action.triggered.connect(self.export_html)
        self.addAction(action)
        self.export_action = action

self,
            shortcut=QtGui.QKeySequence.Close,
            triggered=self.close_active_frontend
            )
        self.add_menu_action(self.file_menu, self.close_action)

        self.export_action=QtGui.QAction("&Save to HTML/XHTML",
            self,
            shortcut=QtGui.QKeySequence.Save,
            triggered=self.export_action_active_frontend
            )
        self.add_menu_action(self.file_menu, self.export_action, True)

        self.file_menu.addSeparator()

        printkey = QtGui.QKeySequence(QtGui.QKeySequence.Print)
        if printkey.matches("Ctrl+P") and sys.platform != 'darwin':
            # Only override the default if there is a collision.
            # Qt ctrl = cmd on OSX, so the match gets a false positive on OSX.
            printkey = "Ctrl+Shift+P"
        self.print_action = QtGui.QAction("&Print",
            self,
            shortcut=printkey,
            triggered=self.print_action_active_frontend)
        self.add_menu_action(self.file_menu, self.print_action, True)

        if sys.platform != 'darwin':
            # OSX always has Quit in the Application menu, only add it
            # to the File menu elsewhere.

            self.file_menu.addSeparator()

key = event.key()
        ctrl_down = self._control_key_down(event.modifiers())
        alt_down = event.modifiers() & QtCore.Qt.AltModifier
        shift_down = event.modifiers() & QtCore.Qt.ShiftModifier

        #------ Special sequences ----------------------------------------------

        if event.matches(QtGui.QKeySequence.Copy):
            self.copy()
            intercepted = True

        elif event.matches(QtGui.QKeySequence.Cut):
            self.cut()
            intercepted = True

        elif event.matches(QtGui.QKeySequence.Paste):
            self.paste()
            intercepted = True

        #------ Special modifier logic -----------------------------------------

        elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter):
            intercepted = True

            # Special handling when tab completing in text mode.
            self._cancel_completion()

            if self._in_buffer(position):
                # Special handling when a reading a line of raw input.
                if self._reading:
                    self._append_plain_text('\n')
                    self._reading = False

"""
        intercepted = False
        cursor = self._control.textCursor()
        position = cursor.position()
        key = event.key()
        ctrl_down = self._control_key_down(event.modifiers())
        alt_down = event.modifiers() & QtCore.Qt.AltModifier
        shift_down = event.modifiers() & QtCore.Qt.ShiftModifier

        #------ Special sequences ----------------------------------------------

        if event.matches(QtGui.QKeySequence.Copy):
            self.copy()
            intercepted = True

        elif event.matches(QtGui.QKeySequence.Cut):
            self.cut()
            intercepted = True

        elif event.matches(QtGui.QKeySequence.Paste):
            self.paste()
            intercepted = True

        #------ Special modifier logic -----------------------------------------

        elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter):
            intercepted = True

            # Special handling when tab completing in text mode.
            self._cancel_completion()

            if self._in_buffer(position):

def init_edit_menu(self):
        self.edit_menu = self.menuBar().addMenu("&Edit")

        self.undo_action = QtGui.QAction("&Undo",
            self,
            shortcut=QtGui.QKeySequence.Undo,
            statusTip="Undo last action if possible",
            triggered=self.undo_active_frontend
            )
        self.add_menu_action(self.edit_menu, self.undo_action)

        self.redo_action = QtGui.QAction("&Redo",
            self,
            shortcut=QtGui.QKeySequence.Redo,
            statusTip="Redo last action if possible",
            triggered=self.redo_active_frontend)
        self.add_menu_action(self.edit_menu, self.redo_action)

        self.edit_menu.addSeparator()

        self.cut_action = QtGui.QAction("&Cut",
            self,