python PyQt用动作填充工具栏

class Window(QMainWindow):

    # Snip...

    def _createActions(self):

        # File actions

        self.newAction = QAction(self)

        self.newAction.setText("&New")

        self.newAction.setIcon(QIcon(":file-new.svg"))

        self.openAction = QAction(QIcon(":file-open.svg"), "&Open...", self)

        self.saveAction = QAction(QIcon(":file-save.svg"), "&Save", self)

        self.exitAction = QAction("&Exit", self)

        # Edit actions

        self.copyAction = QAction(QIcon(":edit-copy.svg"), "&Copy", self)

        self.pasteAction = QAction(QIcon(":edit-paste.svg"), "&Paste", self)

        self.cutAction = QAction(QIcon(":edit-cut.svg"), "C&ut", self)

        # Snip...